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|
| Name | Pos | Team | Age | DOB | POB | Nationality | Bats | Throws | Height | Weight | Salary |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Macaluso, Steve | 3B | Free Agent | 17 | 09/12/2023 | Medford | USA | Right | Right | 6' 2" | 195 lbs | - |
| MacCormack, Mike | SP | Free Agent | 17 | 05/05/2023 | Bloomington | USA | Left | Left | 6' 1" | 170 lbs | - |
| MacDonald, Jonathon | 1B | Arizona Diamondbacks | 36 | 08/16/2004 | San Marcos | USA | Right | Right | 6' 1" | 200 lbs | $1,200,000 |
| Mach, Bobby | SP | Free Agent | 22 | 10/24/2018 | Chantilly | USA | Right | Right | 6' 1" | 190 lbs | - |
| Machovec, Tim | C | Free Agent | 17 | 04/12/2024 | Chicago | USA | Right | Right | 6' 2" | 185 lbs | - |
| Machuca, Willie | 3B | Free Agent | 21 | 10/24/2019 | Prescott | USA | Right | Right | 6' 2" | 200 lbs | - |
| Machungwa, Nate | SP | Free Agent | 17 | 10/04/2023 | Empire | USA | Switch | Right | 6' 6" | 200 lbs | - |
| Macias, Cesar | 3B | Atlanta Braves | 18 | 11/06/2022 | Santo Domingo | DOM | Left | Right | 6' 5" | 200 lbs | - |
| Macias, Currito | SP | Washington Nationals | 31 | 01/14/2010 | Jarabacoa | DOM | Right | Right | 6' 0" | 180 lbs | $11,000,000 |
| Macias, Jose | C | Free Agent | 16 | 06/30/2024 | New York | USA | Switch | Right | 6' 2" | 195 lbs | - |
| Macias, Tony | 3B | Free Agent | 17 | 05/18/2023 | San Juan | PUR | Switch | Right | 6' 5" | 200 lbs | - |
| Maciel, Manny | RP | Free Agent | 26 | 08/23/2014 | Bayamón | PUR | Left | Left | 6' 1" | 190 lbs | - |
| Mack, Jon | SP | Free Agent | 21 | 11/02/2019 | Victorville | USA | Right | Right | 6' 2" | 185 lbs | - |
| Macke, Steve | SP | Free Agent | 21 | 02/23/2020 | North Valley Stream | USA | Right | Right | 6' 2" | 185 lbs | - |
| Mackowski, Mike | SP | Free Agent | 18 | 11/01/2022 | Darlington | USA | Right | Right | 6' 2" | 180 lbs | - |
| MacLean, Elvis | SP | Free Agent | 22 | 04/16/2019 | Jamestown | USA | Left | Left | 5' 10" | 170 lbs | - |
| MacTaggart, Jaylen | 2B | Free Agent | 21 | 11/27/2019 | Winona Lake | USA | Right | Right | 6' 3" | 200 lbs | - |
| Macy, Chris | SP | Minnesota Twins | 31 | 10/12/2009 | Waltham | USA | Right | Left | 5' 9" | 180 lbs | $3,000,000 |
| Madera, Jose | RP | Free Agent | 17 | 09/23/2023 | Dallas | USA | Right | Right | 6' 2" | 185 lbs | - |
| Madrigal, Arturo | CF | Miami Marlins | 25 | 07/31/2015 | Floral Park | USA | Left | Right | 6' 2" | 190 lbs | $6,420,000 |
| Madrigal, Danny | RP | Free Agent | 24 | 08/23/2016 | Vega Baja | PUR | Right | Right | 6' 6" | 205 lbs | - |
| Madruga, Mario | RP | Arizona Diamondbacks | 16 | 03/01/2025 | Mao | DOM | Right | Left | 5' 10" | 155 lbs | - |
| Maese, Luis | 3B | St. Louis Cardinals | 17 | 03/28/2024 | Santo Domingo | DOM | Right | Right | 6' 0" | 180 lbs | - |
| Magallanes, Jerry | SP | Free Agent | 18 | 05/31/2022 | Salinas | PUR | Left | Left | 6' 8" | 200 lbs | - |
| Magallon, David | SP | Free Agent | 20 | 08/23/2020 | San Juan | PUR | Switch | Right | 6' 7" | 200 lbs | - |
| Magda, Tim | SP | Free Agent | 20 | 07/28/2020 | Prichard | USA | Right | Right | 5' 10" | 170 lbs | - |
| Magdaleno, Billy | 2B | Free Agent | 18 | 07/15/2022 | Norwalk | USA | Right | Right | 6' 2" | 175 lbs | - |
| Magel, Jon | RP | Free Agent | 17 | 10/28/2023 | Walla Walla | USA | Switch | Right | 6' 6" | 200 lbs | - |
| Maggard, Danny | 3B | Free Agent | 16 | 08/31/2024 | Bellevue | USA | Right | Right | 6' 6" | 190 lbs | - |
| Maggio, Ben | SP | Free Agent | 21 | 07/16/2019 | Birmingham | USA | Left | Right | 6' 3" | 185 lbs | - |
| Magnusson, Korren | SP | Free Agent | 20 | 11/21/2020 | Shenandoah | USA | Right | Right | 6' 0" | 180 lbs | - |
| Magras, Brendan | SS | Free Agent | 17 | 08/24/2023 | Kannapolis | USA | Right | Right | 6' 2" | 185 lbs | - |
| Magruder, Ben | SP | Free Agent | 17 | 09/29/2023 | Elmont | USA | Right | Left | 6' 5" | 185 lbs | - |
| Mahar, Joe | SP | Free Agent | 17 | 08/15/2023 | Mineola | USA | Right | Right | 6' 4" | 190 lbs | - |
| Maheras, Mike | 1B | Free Agent | 18 | 11/10/2022 | Caldwell | USA | Left | Right | 6' 6" | 200 lbs | - |
| Mahony, Steve | SS | Free Agent | 17 | 12/05/2023 | Sacramento | USA | Right | Right | 6' 2" | 180 lbs | - |
| Maierle, Ernie | RP | Free Agent | 25 | 09/21/2015 | Johns Creek | USA | Right | Right | 6' 2" | 200 lbs | - |
| Maine, Dusty | SP | Free Agent | 18 | 08/27/2022 | San Juan | USA | Right | Right | 6' 4" | 180 lbs | - |
| Mains, Pete | SP | Free Agent | 22 | 03/02/2019 | Morgan Hill | USA | Switch | Right | 6' 2" | 195 lbs | - |
| Majdecki, Wendelin | CF | Free Agent | 16 | 09/16/2024 | Nashua | USA | Right | Right | 6' 2" | 180 lbs | - |
| Majer, Joe | SP | Free Agent | 15 | 08/30/2025 | Bolton | USA | Left | Right | 5' 10" | 155 lbs | - |
| Majewski, Jim | RP | Free Agent | 17 | 08/08/2023 | Los Angeles | USA | Right | Right | 6' 4" | 185 lbs | - |
| Maker, Pat | C | Free Agent | 21 | 08/03/2019 | Collinsville | USA | Right | Right | 6' 5" | 215 lbs | - |
| Maki, Jon | SP | Free Agent | 17 | 08/19/2023 | St. Paul | USA | Left | Right | 6' 2" | 170 lbs | - |
| Maki, Kevin | C | Philadelphia Phillies | 31 | 10/21/2009 | Austin | USA | Right | Right | 6' 4" | 200 lbs | $563,500 |
| Makinen, Sean | RP | Free Agent | 22 | 11/04/2018 | Santa Clara | USA | Switch | Right | 6' 3" | 190 lbs | - |
| Malagon, Mike | DH | Texas Rangers | 29 | 02/21/2012 | Akron | USA | Left | Left | 6' 1" | 205 lbs | $13,600,000 |
| Maldonado, Bobby | SS | Tampa Bay Rays | 18 | 09/24/2022 | Morón | CUB | Left | Right | 6' 2" | 175 lbs | - |
| Maldonado, Daniel | C | Tampa Bay Rays | 17 | 02/13/2024 | Santiago | DOM | Left | Right | 6' 1" | 185 lbs | - |
| Maldonado, Jairo | RF | Free Agent | 16 | 10/25/2024 | Hawthorne | USA | Switch | Left | 6' 1" | 175 lbs | - |
| Maldonado, Juan | 2B | Free Agent | 20 | 02/19/2021 | Santo Domingo | DOM | Right | Right | 6' 1" | 190 lbs | - |
| Maldonado, Juan | SP | Pittsburgh Pirates | 29 | 04/17/2012 | León | MEX | Switch | Right | 6' 8" | 200 lbs | $563,500 |
| Maldonado, Mario | C | Oakland Athletics | 17 | 04/10/2024 | Remedios | CUB | Right | Right | 6' 0" | 185 lbs | - |
| Maldonado, Mario | 2B | Free Agent | 16 | 07/16/2024 | Fajardo | PUR | Right | Right | 6' 4" | 190 lbs | - |
| Maldonado, Mario | C | Free Agent | 18 | 05/07/2022 | Foley | USA | Right | Right | 6' 0" | 180 lbs | - |
| Maldonado, Nelson | C | Boston Red Sox | 17 | 09/05/2023 | Puerto Plata | DOM | Right | Right | 6' 1" | 195 lbs | - |
| Maldonado, Rodrigo | SP | Free Agent | 18 | 05/10/2022 | Ross Township | USA | Left | Left | 6' 6" | 200 lbs | - |
| Malherbe, Pierre-Louis | SP | Free Agent | 20 | 03/29/2021 | Dallas | USA | Right | Right | 6' 2" | 165 lbs | - |
| Malin, Mike | 2B | Free Agent | 15 | 11/19/2025 | White Rock | USA | Left | Right | 6' 3" | 180 lbs | - |
| Mallard, Jimmy | RP | Free Agent | 17 | 10/19/2023 | High Point | USA | Left | Left | 6' 2" | 175 lbs | - |
| Mallon, Mike | RF | Free Agent | 17 | 11/14/2023 | Paso Robles | USA | Left | Left | 6' 5" | 190 lbs | - |
| Mallory, Joe | SP | Free Agent | 18 | 06/05/2022 | Phoenix | USA | Right | Right | 5' 11" | 160 lbs | - |
| Malnar, Andy | SP | Arizona Diamondbacks | 30 | 09/20/2010 | Milford | USA | Right | Right | 6' 2" | 195 lbs | $1,280,000 |
| Malone, Jake | C | Free Agent | 21 | 08/13/2019 | Brighton | USA | Right | Right | 6' 2" | 200 lbs | - |
| Maloy, Jim | SP | Free Agent | 21 | 09/24/2019 | Essex | USA | Left | Left | 6' 6" | 200 lbs | - |
| Manasco, Jeff | CF | Free Agent | 17 | 04/09/2024 | Lincoln | USA | Right | Right | 6' 0" | 160 lbs | - |
| Mancera, Bob | CF | Tampa Bay Rays | 18 | 10/26/2022 | Colón | CUB | Right | Right | 6' 2" | 185 lbs | - |
| Mancha, Danny | SP | Free Agent | 21 | 05/21/2019 | Sonoma | USA | Right | Left | 6' 0" | 175 lbs | - |
| Manders, Josh | RP | Free Agent | 16 | 11/23/2024 | North Ft. Myers | USA | Right | Right | 6' 1" | 170 lbs | - |
| Maness, Joe | C | Free Agent | 16 | 06/06/2024 | Aventura | USA | Right | Right | 6' 2" | 195 lbs | - |
| Mang, Sean | RP | Free Agent | 20 | 11/22/2020 | Rockville Centre | USA | Right | Right | 5' 10" | 170 lbs | - |
| Mangum, Tim | 2B | Free Agent | 17 | 11/21/2023 | Grants Pass | USA | Right | Right | 6' 2" | 190 lbs | - |
| Manis, Kevin | SP | Free Agent | 33 | 02/25/2008 | Millbrook | USA | Left | Left | 6' 0" | 180 lbs | - |
| Maniscalco, Josh | SP | Free Agent | 21 | 04/12/2020 | Lincoln | USA | Right | Right | 6' 6" | 195 lbs | - |
| Manley, R.J. | SP | Free Agent | 16 | 03/29/2025 | New York | USA | Left | Left | 6' 8" | 200 lbs | - |
| Mann, Dan | SP | Free Agent | 17 | 09/09/2023 | Hamlin | USA | Switch | Right | 6' 5" | 185 lbs | - |
| Manning, Josh | RP | Free Agent | 24 | 06/30/2016 | Wichita | USA | Switch | Right | 6' 2" | 200 lbs | - |
| Manning, Steve | SP | Free Agent | 29 | 01/26/2012 | Sumner | USA | Right | Right | 6' 1" | 200 lbs | - |
| Manning, Vince | SS | Free Agent | 20 | 11/16/2020 | Snohomish | USA | Right | Right | 6' 2" | 180 lbs | - |
| Manon, Andres | 3B | Chicago White Sox | 18 | 02/04/2023 | Cruces | CUB | Left | Right | 6' 2" | 180 lbs | - |
| Manross, Butch | 2B | Free Agent | 15 | 07/22/2025 | Oklahoma City | USA | Right | Right | 5' 9" | 150 lbs | - |
| Mansfield, Matt | RF | Free Agent | 16 | 11/26/2024 | East Palestine | USA | Left | Left | 6' 0" | 165 lbs | - |
| Mansfield, Pat | SP | Free Agent | 23 | 09/16/2017 | Lawrence | USA | Switch | Right | 6' 8" | 200 lbs | - |
| Mansilla, Manny | SP | Free Agent | 16 | 07/05/2024 | Dorado | PUR | Left | Left | 6' 3" | 180 lbs | - |
| Manson, Ben | SP | Free Agent | 17 | 11/18/2023 | Mt. Horeb | USA | Left | Left | 6' 2" | 180 lbs | - |
| Manson, Justin | SP | Free Agent | 21 | 03/23/2020 | Rolla | USA | Right | Right | 6' 4" | 200 lbs | - |
| Mantz, Jed | SP | Free Agent | 19 | 10/31/2021 | Dallas | USA | Left | Left | 6' 6" | 200 lbs | - |
| Mantz, Randy | CF | Free Agent | 16 | 06/03/2024 | Brentwood | USA | Left | Left | 6' 1" | 165 lbs | - |
| Manwaring, Chris | SS | Free Agent | 21 | 09/03/2019 | Denver | USA | Right | Right | 5' 11" | 175 lbs | - |
| Many, Kevin | CL | Free Agent | 21 | 07/10/2019 | Arden-Arcade | USA | Right | Right | 6' 1" | 190 lbs | - |
| Manzano, Jose | RP | Free Agent | 23 | 08/06/2017 | Philadelphia | USA | Left | Left | 6' 0" | 180 lbs | - |
| Maravilla, Rich | 1B | Milwaukee Brewers | 27 | 01/07/2014 | Corozal | PUR | Right | Right | 6' 0" | 200 lbs | $563,500 |
| Marberry, Kevin | RP | Free Agent | 26 | 08/08/2014 | Houston | USA | Left | Left | 6' 2" | 200 lbs | - |
| Marcom, Jamie | SP | Free Agent | 16 | 10/11/2024 | Denver | USA | Left | Right | 6' 8" | 200 lbs | - |
| Marcotte, Ron | SP | Free Agent | 21 | 07/02/2019 | Aberdeen | USA | Left | Right | 6' 4" | 195 lbs | - |
| Marcum, Pete | 1B | Free Agent | 17 | 04/12/2024 | New York | USA | Switch | Right | 6' 3" | 200 lbs | - |
| Mares, Daniel | RP | Houston Astros | 32 | 01/13/2009 | White Oak | USA | Right | Right | 6' 1" | 200 lbs | $1,000,000 |
| Mares, Oscar | SP | Free Agent | 16 | 07/17/2024 | South Salt Lake | USA | Right | Right | 6' 4" | 180 lbs | - |
| Marin, Bruce | RP | Chicago White Sox | 30 | 04/26/2011 | Carolina | PUR | Right | Right | 6' 2" | 200 lbs | $854,250 |
| Marin, Leo | SS | Free Agent | 17 | 07/01/2023 | Lake Magdalene | USA | Right | Right | 6' 2" | 175 lbs | - |
| Marin, Luis | RP | Free Agent | 35 | 04/29/2006 | Carolina | PUR | Right | Right | 6' 4" | 200 lbs | - |
| Marinero, Juan | 3B | New York Yankees | 33 | 12/09/2007 | San Cristóbal | DOM | Right | Right | 6' 2" | 200 lbs | $26,800,000 |
| Mariscal, Steve | SP | Free Agent | 18 | 08/01/2022 | Springfield | USA | Right | Right | 6' 7" | 190 lbs | - |
| Markel, J.R. | RF | Free Agent | 18 | 05/22/2022 | Birmingham | USA | Left | Left | 6' 4" | 195 lbs | - |
| Markert, Dan | SP | Free Agent | 16 | 03/08/2025 | New York | USA | Left | Left | 6' 0" | 165 lbs | - |
| Markette, Mike | SP | Free Agent | 18 | 06/04/2022 | Manvel | USA | Right | Right | 6' 8" | 200 lbs | - |
| Markham, Andy | CF | Baltimore Orioles | 27 | 10/15/2013 | Aloha | USA | Left | Left | 6' 2" | 200 lbs | $563,500 |
| Markle, Pete | SP | Free Agent | 21 | 09/28/2019 | Paramount | USA | Right | Right | 6' 4" | 200 lbs | - |
| Markunas, J.R. | RP | Free Agent | 18 | 01/11/2023 | Buckley | USA | Left | Right | 6' 2" | 180 lbs | - |
| Marler, Ben | RP | Free Agent | 24 | 01/15/2017 | Maple Valley | USA | Right | Right | 6' 1" | 195 lbs | - |
| Marona, Joe | SP | Free Agent | 21 | 09/27/2019 | Laguna Niguel | USA | Right | Right | 6' 5" | 200 lbs | - |
| Marquardt, Tony | RP | Free Agent | 16 | 07/18/2024 | Jacksonville | USA | Right | Right | 6' 0" | 170 lbs | - |
| Marr, Jonathan | RP | Free Agent | 25 | 08/31/2015 | Bear | USA | Left | Left | 6' 2" | 185 lbs | - |
| Marrero, David | RP | Free Agent | 34 | 09/22/2006 | Arroyo | PUR | Right | Left | 6' 4" | 200 lbs | - |
| Marrero, Jerry | LF | New York Mets | 27 | 09/10/2013 | Daleville | USA | Left | Left | 6' 1" | 200 lbs | $7,987,500 |
| Marrero, Juan | 2B | Chicago White Sox | 18 | 10/18/2022 | Santo Domingo | DOM | Right | Right | 6' 1" | 185 lbs | - |
| Marro, Josh | CF | Free Agent | 17 | 06/24/2023 | Wurtland | USA | Right | Right | 6' 6" | 195 lbs | - |
| Marroquin, Omar | C | New York Mets | 37 | 03/11/2004 | Santo Domingo | DOM | Right | Right | 6' 2" | 200 lbs | $1,900,000 |
| Marsal, Omar | SP | Free Agent | 17 | 04/07/2024 | San José | CRC | Right | Right | 6' 4" | 180 lbs | - |
| Marsh, Chad | CF | Free Agent | 17 | 11/10/2023 | Spring Creek | USA | Right | Right | 5' 10" | 160 lbs | - |
| Marshall, Alan | 1B | Washington Nationals | 24 | 07/30/2016 | St. Louis | USA | Right | Right | 6' 4" | 200 lbs | $563,500 |
| Marshall, Dusty | C | Free Agent | 17 | 06/07/2023 | Palm Bay | USA | Right | Right | 6' 2" | 180 lbs | - |
| Marshall, Robby | SS | Free Agent | 17 | 07/07/2023 | Charlotte | USA | Right | Right | 6' 4" | 185 lbs | - |
| Marston, Chris | CF | Free Agent | 17 | 05/21/2023 | Rowlett | USA | Right | Right | 6' 0" | 165 lbs | - |
| Martell, Elvis | CF | Free Agent | 21 | 03/13/2020 | San Cristóbal | DOM | Left | Right | 6' 0" | 180 lbs | - |
| Martello, Sam | SS | Free Agent | 18 | 01/15/2023 | Cross Lanes | USA | Left | Right | 6' 2" | 180 lbs | - |
| Martin, Andy | SP | Free Agent | 18 | 10/31/2022 | Bridgeton | USA | Switch | Right | 6' 0" | 170 lbs | - |
| Martin, Ben | SP | Free Agent | 18 | 01/24/2023 | Wethersfield | USA | Right | Right | 6' 6" | 195 lbs | - |
| Martin, Brad | SS | Free Agent | 18 | 09/10/2022 | Centerville | USA | Right | Right | 6' 6" | 190 lbs | - |
| Martin, Dorian | SP | Free Agent | 17 | 01/16/2024 | Glassboro | USA | Left | Left | 6' 1" | 175 lbs | - |
| Martin, Eric | RP | Chicago Cubs | 33 | 11/04/2007 | Fernandina Beach | USA | Right | Right | 6' 4" | 200 lbs | $563,500 |
| Martin, Greg | RP | Free Agent | 24 | 09/13/2016 | Daytona Beach | USA | Right | Right | 6' 2" | 190 lbs | - |
| Martin, Ian | CF | Free Agent | 19 | 06/30/2021 | New York | USA | Left | Right | 5' 10" | 165 lbs | - |
| Martin, Jake | RP | Free Agent | 16 | 05/07/2024 | La Porte | USA | Right | Right | 6' 2" | 170 lbs | - |
| Martin, Jamie | SP | Free Agent | 17 | 12/14/2023 | Augusta | USA | Right | Right | 6' 2" | 180 lbs | - |
| Martin, Jeremy | SP | Free Agent | 16 | 09/20/2024 | Medford | USA | Left | Right | 5' 11" | 155 lbs | - |
| Martin, Jimmy | RP | Free Agent | 20 | 01/06/2021 | Boise | USA | Right | Right | 6' 4" | 195 lbs | - |
| Martin, Jon | RP | Cleveland Indians | 34 | 09/21/2006 | Baltimore | USA | Left | Right | 6' 0" | 200 lbs | $1,700,000 |
| Martin, Steve | RP | Free Agent | 24 | 12/09/2016 | Lanham-Seabrook | USA | Right | Right | 6' 4" | 200 lbs | - |
| Martin, Tim | SP | Free Agent | 18 | 06/05/2022 | Germantown | USA | Switch | Right | 5' 10" | 155 lbs | - |
| Martineau, Tim | RF | Free Agent | 17 | 09/11/2023 | Houston | USA | Left | Left | 6' 2" | 180 lbs | - |
| Martinec, Rich | 1B | Houston Astros | 16 | 12/27/2024 | Paraíso | DOM | Right | Right | 6' 3" | 180 lbs | - |
| Martines, Ernesto | 2B | Free Agent | 16 | 08/17/2024 | San Juan | PUR | Right | Right | 6' 0" | 165 lbs | - |
| Martines, Melvin | 2B | Houston Astros | 18 | 02/22/2023 | Carolina | PUR | Right | Right | 6' 1" | 175 lbs | - |
| Mary, Steve | CF | Free Agent | 20 | 08/08/2020 | Lisbon | USA | Switch | Right | 6' 0" | 180 lbs | - |
| Maschio, Mike | SP | Free Agent | 20 | 09/27/2020 | Henderson | USA | Left | Left | 6' 2" | 185 lbs | - |
| Mason, Chris | SS | Free Agent | 22 | 10/08/2018 | Cornelius | USA | Right | Right | 6' 3" | 195 lbs | - |
| Mason, Ed | RF | Minnesota Twins | 28 | 11/21/2012 | Kettering | USA | Right | Right | 6' 1" | 190 lbs | $3,050,000 |
| Mason, Greg | SP | Free Agent | 17 | 11/02/2023 | Ft. Worth | USA | Right | Left | 6' 2" | 175 lbs | - |
| Mason, Jared | C | Free Agent | 16 | 01/10/2025 | White Oak East | USA | Switch | Right | 6' 2" | 185 lbs | - |
| Mason, Jim | RP | Free Agent | 16 | 04/06/2025 | Columbus Junction | USA | Right | Right | 6' 2" | 170 lbs | - |
| Mason, Mike | SS | Free Agent | 17 | 08/17/2023 | Roseburg | USA | Right | Right | 6' 1" | 170 lbs | - |
| Mass, Joe | 3B | Free Agent | 17 | 08/05/2023 | Winston-Salem | USA | Left | Right | 6' 2" | 190 lbs | - |
| Massarella, Jerry | RP | Free Agent | 17 | 07/12/2023 | South Pasadena | USA | Left | Left | 6' 6" | 190 lbs | - |
| Massey, Tim | SP | Free Agent | 17 | 10/28/2023 | Columbia | USA | Right | Right | 6' 4" | 190 lbs | - |
| Mata, Danny | SP | Pittsburgh Pirates | 16 | 05/14/2024 | Santiago | DOM | Right | Left | 5' 10" | 155 lbs | - |
| Mata, Sal | SP | St. Louis Cardinals | 16 | 10/07/2024 | Las Matas de Farfan | DOM | Right | Right | 6' 7" | 200 lbs | - |
| Matamoros, Leo | RF | Cincinnati Reds | 31 | 08/22/2009 | St. Charles | USA | Switch | Left | 6' 2" | 200 lbs | $800,000 |
| Mathews, Jeff | SP | Free Agent | 20 | 02/25/2021 | New York | USA | Left | Right | 6' 6" | 185 lbs | - |
| Mathews, Josh | SP | Free Agent | 17 | 03/27/2024 | Columbus | USA | Right | Right | 5' 11" | 160 lbs | - |
| Mathews, Josh | RP | Free Agent | 23 | 08/20/2017 | Roselle | USA | Left | Left | 5' 10" | 175 lbs | - |
| Mathis, Danny | SP | Free Agent | 16 | 07/13/2024 | Hattiesburg | USA | Left | Left | 6' 1" | 170 lbs | - |
| Mathis, Jaiden | SS | Free Agent | 17 | 04/10/2024 | Santa Clarita | USA | Right | Right | 6' 2" | 170 lbs | - |
| Mathison, Danny | SP | Free Agent | 16 | 10/18/2024 | Gulfport | USA | Right | Right | 6' 1" | 170 lbs | - |
| Matkin, Joel | SP | Free Agent | 26 | 04/18/2015 | New York | USA | Left | Left | 6' 7" | 210 lbs | - |
| Matlack, Ed | SP | Free Agent | 24 | 05/13/2016 | New York | USA | Left | Left | 6' 7" | 215 lbs | - |
| Matos, Bill | CF | Chicago Cubs | 16 | 11/12/2024 | Santo Domingo | DOM | Left | Right | 6' 5" | 200 lbs | - |
| Matos, Daniel | SP | Free Agent | 18 | 07/29/2022 | San Juan | PUR | Left | Right | 5' 10" | 160 lbs | - |
| Matos, Eddie | SP | Free Agent | 21 | 10/11/2019 | Dallas | USA | Left | Right | 6' 2" | 180 lbs | - |
| Matos, Eli | C | Cincinnati Reds | 30 | 10/20/2010 | Westlake | USA | Left | Right | 6' 0" | 200 lbs | $1,800,000 |
| Matos, Jose | SP | Minnesota Twins | 19 | 03/15/2022 | Cartagena | COL | Right | Right | 6' 6" | 195 lbs | - |
| Matos, Jose | SP | Minnesota Twins | 30 | 02/11/2011 | Johns Creek | USA | Right | Right | 6' 3" | 200 lbs | $21,200,000 |
| Matozzo, Mike | RF | Free Agent | 21 | 01/02/2020 | Purvis | USA | Right | Right | 5' 11" | 170 lbs | - |
| Matte, Ian | SP | Free Agent | 20 | 07/17/2020 | Nashville | USA | Right | Right | 6' 7" | 205 lbs | - |
| Mattes, Ted | RF | Free Agent | 17 | 01/01/2024 | Spanish Lake | USA | Left | Left | 6' 5" | 195 lbs | - |
| Matthews, Andy | SP | Free Agent | 18 | 08/04/2022 | Sunrise Manor | USA | Right | Right | 6' 0" | 165 lbs | - |
| Matthews, Mat | SP | Free Agent | 18 | 10/23/2022 | Urbana | USA | Switch | Right | 6' 4" | 195 lbs | - |
| Mattox, Xavier | SP | Free Agent | 20 | 09/15/2020 | Morristown | USA | Left | Left | 6' 7" | 200 lbs | - |
| Matyja, Mike | RP | San Diego Padres | 35 | 11/12/2005 | Olympia | USA | Left | Left | 6' 0" | 200 lbs | $6,500,000 |
| Mauck, Mike | 3B | Free Agent | 17 | 03/16/2024 | Spencerport | USA | Right | Right | 6' 4" | 185 lbs | - |
| Maugans, Ben | SP | Free Agent | 21 | 01/09/2020 | Carney | USA | Right | Right | 6' 5" | 195 lbs | - |
| Mauney, Jon | SP | Free Agent | 20 | 06/20/2020 | San Diego | USA | Right | Right | 6' 0" | 165 lbs | - |
| Maurer, Kaleb | 3B | Free Agent | 16 | 09/27/2024 | Sandy Springs | USA | Right | Right | 6' 1" | 175 lbs | - |
| Mauricio, Ronny | 2B | Washington Nationals | 40 | 04/04/2001 | Santo Domingo | DOM | Switch | Right | 6' 3" | 200 lbs | $2,200,000 |
| Mavtsaev, Lesta | SP | Free Agent | 18 | 05/13/2022 | Dickson | USA | Right | Right | 5' 11" | 165 lbs | - |
| May, Bobby | RP | Free Agent | 32 | 04/16/2009 | Roseville | USA | Right | Right | 6' 4" | 200 lbs | - |
| May, Chris | CF | Free Agent | 15 | 11/30/2025 | Hallandale Beach | USA | Left | Left | 6' 2" | 180 lbs | - |
| May, Chris | SP | Free Agent | 20 | 03/24/2021 | Canton | USA | Right | Right | 6' 3" | 185 lbs | - |
| May, Jake | SP | Free Agent | 19 | 11/06/2021 | Seaside | USA | Left | Right | 6' 6" | 200 lbs | - |
| May, Jim | C | Free Agent | 17 | 07/16/2023 | Cheektowaga | USA | Left | Right | 6' 2" | 180 lbs | - |
| Mayberry, Mike | CF | Free Agent | 18 | 08/11/2022 | Memphis | USA | Switch | Right | 6' 2" | 185 lbs | - |
| Mayer, Mike | C | Free Agent | 25 | 11/02/2015 | Jupiter | USA | Right | Right | 6' 3" | 200 lbs | - |
| Mayes, Elijah | SP | Free Agent | 18 | 02/15/2023 | Las Vegas | USA | Switch | Right | 6' 5" | 195 lbs | - |
| Mayo, Jamel | LF | Free Agent | 18 | 03/15/2023 | Biloxi | USA | Left | Left | 6' 3" | 185 lbs | - |
| Mayoral, Rogelio | LF | Free Agent | 16 | 09/12/2024 | Groves | USA | Right | Right | 6' 1" | 180 lbs | - |
| Mayr, Doug | SP | Free Agent | 21 | 01/08/2020 | Philadelphia | USA | Right | Right | 6' 2" | 190 lbs | - |
| Mays, Clint | RP | Atlanta Braves | 30 | 10/31/2010 | Greenville | USA | Right | Left | 6' 2" | 195 lbs | $4,000,000 |
| Mazas, Jorge | SP | Free Agent | 25 | 08/29/2015 | Indianapolis | USA | Right | Right | 6' 6" | 200 lbs | - |
| Mazurak, Sean | RF | Free Agent | 20 | 09/05/2020 | New Orleans | USA | Left | Left | 6' 3" | 195 lbs | - |
| McAloon, Kevin | CF | Free Agent | 17 | 07/16/2023 | Vacaville | USA | Switch | Left | 6' 2" | 180 lbs | - |
| McAlpine, Chris | SP | Free Agent | 20 | 04/13/2021 | Waipahu | USA | Right | Right | 6' 4" | 180 lbs | - |
| McArthur, Eli | SP | Free Agent | 21 | 02/14/2020 | Collinwood | USA | Right | Right | 6' 5" | 205 lbs | - |
| McArthur, Jonny | SP | Free Agent | 17 | 06/13/2023 | Ogden | USA | Right | Right | 6' 6" | 195 lbs | - |
| McArver, Andy | C | Houston Astros | 36 | 07/31/2004 | Etowah | USA | Left | Right | 6' 1" | 200 lbs | $2,390,000 |
| McBain, Mike | RP | Free Agent | 16 | 09/12/2024 | Binghamton | USA | Right | Right | 6' 0" | 160 lbs | - |
| McBee, Ben | RP | Free Agent | 23 | 08/19/2017 | Lutz | USA | Switch | Right | 6' 4" | 200 lbs | - |
| McBee, Bobby | SS | Free Agent | 17 | 03/28/2024 | Vestavia Hills | USA | Right | Right | 6' 2" | 160 lbs | - |
| McBride, Alan | RP | Free Agent | 17 | 10/28/2023 | Turlock | USA | Right | Right | 6' 4" | 185 lbs | - |
| McBride, Danny | 3B | Free Agent | 18 | 05/31/2022 | Independence | USA | Right | Right | 6' 2" | 190 lbs | - |
| McCann, Josh | SP | Free Agent | 21 | 04/01/2020 | Ennis | USA | Right | Right | 6' 2" | 180 lbs | - |
| McCann, Mike | SP | Free Agent | 18 | 10/19/2022 | Greeley | USA | Left | Left | 6' 6" | 200 lbs | - |
| McCann, Phil | LF | Free Agent | 18 | 01/16/2023 | Chicago | USA | Right | Right | 6' 3" | 185 lbs | - |
| McCarley, Dave | RP | Detroit Tigers | 30 | 05/21/2010 | Hammond | USA | Right | Right | 6' 1" | 190 lbs | $563,500 |
| McCarthy, Andy | SP | Free Agent | 21 | 09/21/2019 | Belfast | USA | Right | Right | 6' 4" | 200 lbs | - |
| McCarthy, Jake | SS | Free Agent | 18 | 10/27/2022 | Dayton | USA | Right | Right | 6' 0" | 170 lbs | - |
| McCarthy, Mike | SP | Free Agent | 22 | 11/17/2018 | Easton | USA | Right | Right | 6' 6" | 190 lbs | - |
| McCartney, Jon | SP | Free Agent | 21 | 04/03/2020 | Ossining | USA | Right | Right | 6' 0" | 180 lbs | - |
| McCartney, Maik | SP | Free Agent | 20 | 01/01/2021 | Shawano | USA | Right | Right | 6' 0" | 170 lbs | - |
| McClain, Yeily | CF | Free Agent | 21 | 07/06/2019 | Apple Valley | USA | Right | Right | 6' 2" | 185 lbs | - |
| McCleary, Dan | RP | Minnesota Twins | 26 | 07/02/2014 | Madera | USA | Right | Right | 6' 0" | 195 lbs | $563,500 |
| McClellan, Jeff | SS | Free Agent | 17 | 08/06/2023 | Roseburg | USA | Right | Right | 6' 0" | 165 lbs | - |
| McClellan, Zach | RP | Free Agent | 24 | 02/21/2017 | New York | USA | Switch | Right | 6' 8" | 200 lbs | - |
| McCloud, Bob | 1B | Free Agent | 18 | 08/12/2022 | Santaquin | USA | Right | Right | 6' 4" | 210 lbs | - |
| McClure, Gavin | RP | Free Agent | 25 | 11/05/2015 | Fairfield | USA | Left | Left | 6' 2" | 200 lbs | - |
| McClure, Joe | RP | Free Agent | 27 | 12/03/2013 | Pueblo | USA | Right | Right | 6' 6" | 210 lbs | - |
| McCluskey, Dusty | SP | Free Agent | 21 | 11/22/2019 | Winfield | USA | Right | Right | 6' 2" | 195 lbs | - |
| McConkie, Jeremy | RP | Free Agent | 22 | 01/31/2019 | Birmingham | USA | Right | Right | 6' 1" | 185 lbs | - |
| McCord, Bob | SP | Free Agent | 21 | 03/22/2020 | Miramar | USA | Right | Right | 6' 3" | 185 lbs | - |
| McCord, Nate | CF | Free Agent | 16 | 04/12/2025 | Cranston | USA | Left | Left | 6' 2" | 165 lbs | - |
| McCormack, Jeremy | CF | Free Agent | 16 | 08/16/2024 | New York | USA | Switch | Right | 6' 2" | 170 lbs | - |
| McCormick, Dan | RP | Free Agent | 22 | 05/29/2018 | San Francisco | USA | Right | Right | 6' 7" | 215 lbs | - |
| McCoy, Ben | RP | Free Agent | 25 | 03/02/2016 | Detroit | USA | Right | Right | 5' 10" | 175 lbs | - |
| McCracken, Micah | SP | Free Agent | 17 | 05/10/2023 | Lubbock | USA | Right | Right | 6' 3" | 180 lbs | - |
| McCrary, Jacob | 2B | Free Agent | 19 | 10/15/2021 | New York | USA | Right | Right | 6' 2" | 175 lbs | - |
| McCready, Tim | SP | Free Agent | 17 | 05/12/2023 | Hoover | USA | Right | Right | 6' 0" | 165 lbs | - |
| McCreary, Aaron | RP | Free Agent | 18 | 05/27/2022 | Jacksonville | USA | Right | Right | 6' 6" | 195 lbs | - |
| McCullar, Bret | SS | Free Agent | 20 | 11/19/2020 | Dallas | USA | Right | Right | 6' 3" | 190 lbs | - |
| McCullar, Josh | 1B | Free Agent | 31 | 09/23/2009 | Louisville | USA | Right | Right | 6' 5" | 200 lbs | - |
| McDonald, Bobby | 1B | Free Agent | 17 | 09/30/2023 | Los Angeles | USA | Right | Right | 6' 3" | 205 lbs | - |
| McDonald, Jared | SP | Free Agent | 17 | 08/10/2023 | Southport | USA | Right | Right | 6' 8" | 200 lbs | - |
| McDonald, Jimmy | SP | Free Agent | 18 | 11/16/2022 | Lubbock | USA | Right | Right | 6' 2" | 185 lbs | - |
| McDonald, Jonathan | C | Free Agent | 16 | 05/22/2024 | Decatur | USA | Right | Right | 6' 1" | 180 lbs | - |
| McDonald, Jonathan | SP | Pittsburgh Pirates | 25 | 08/16/2015 | Englewood | USA | Left | Right | 6' 0" | 190 lbs | $563,500 |
| McDowell, Chris | 1B | Free Agent | 28 | 03/28/2013 | Irving | USA | Left | Left | 6' 6" | 225 lbs | - |
| McDowell, Mat | SP | Free Agent | 17 | 08/13/2023 | Corpus Christi | USA | Right | Right | 6' 2" | 180 lbs | - |
| McDowell, Pat | RP | Boston Red Sox | 26 | 11/29/2014 | Pomona | USA | Left | Right | 6' 1" | 195 lbs | $563,500 |
| McDowell, Willie | SP | Free Agent | 17 | 08/26/2023 | Middletown | USA | Right | Right | 6' 4" | 185 lbs | - |
| McDuffee, Kody | RP | New York Mets | 37 | 10/29/2003 | Decatur | USA | Switch | Right | 6' 2" | 200 lbs | $4,000,000 |
| McElhaney, Jonathan | RP | Free Agent | 25 | 09/08/2015 | Corte Madera | USA | Right | Right | 6' 1" | 200 lbs | - |
| McElhaney, Pete | RP | Free Agent | 27 | 08/01/2013 | Seattle | USA | Right | Right | 6' 4" | 205 lbs | - |
| McElrath, Mike | LF | Milwaukee Brewers | 28 | 09/11/2012 | Ft. Wayne | USA | Left | Left | 6' 5" | 200 lbs | $8,400,000 |
| McEneany, Joe | 2B | Kansas City Royals | 37 | 06/09/2003 | Bridgeport | USA | Switch | Right | 5' 10" | 195 lbs | $7,500,000 |
| McEnroe, Dan | C | San Francisco Giants | 23 | 11/05/2017 | Aurora | USA | Left | Right | 6' 7" | 200 lbs | $563,500 |
| McEntee, Kevin | 3B | Free Agent | 18 | 08/04/2022 | Huntington Park | USA | Right | Right | 6' 1" | 180 lbs | - |
| McEntire, Ron | RP | Free Agent | 16 | 06/23/2024 | New York | USA | Right | Right | 6' 0" | 165 lbs | - |
| McFall, Joe | SS | Chicago Cubs | 26 | 07/26/2014 | Los Angeles | USA | Right | Right | 6' 1" | 200 lbs | $563,500 |
| McFall, Randy | SP | Free Agent | 17 | 06/18/2023 | Pine Beach | USA | Right | Right | 6' 1" | 170 lbs | - |
| McFarland, Jaime | RP | Free Agent | 18 | 10/26/2022 | Hialeah | USA | Switch | Right | 6' 4" | 190 lbs | - |
| McFarland, Jake | RP | Free Agent | 26 | 10/16/2014 | Warren | USA | Right | Right | 6' 1" | 195 lbs | - |
| McFarland, Jesus | RP | Free Agent | 19 | 04/24/2022 | Phoenix | USA | Left | Left | 6' 6" | 190 lbs | - |
| McFarland, Sebastien | RP | Free Agent | 18 | 10/28/2022 | Lakes of the Four Seasons | USA | Right | Right | 6' 2" | 175 lbs | - |
| McGary, Kevin | SP | Free Agent | 21 | 05/14/2019 | Mayfield Heights | USA | Right | Right | 6' 5" | 200 lbs | - |
| McGee, Dan | SP | Free Agent | 21 | 11/27/2019 | Passaic | USA | Right | Right | 6' 2" | 185 lbs | - |
| McGhee, Jake | SS | Free Agent | 19 | 07/13/2021 | Bridgeport | USA | Right | Right | 6' 1" | 175 lbs | - |
| McGill, Jaylen | CL | Free Agent | 21 | 10/16/2019 | Pinecrest | USA | Right | Right | 6' 0" | 185 lbs | - |
| McGilvray, Jeff | RF | Free Agent | 16 | 09/19/2024 | Whitefish | USA | Left | Left | 6' 1" | 170 lbs | - |
| McGinnis, Ian | RF | Oakland Athletics | 29 | 03/31/2012 | San Jose | USA | Right | Right | 6' 2" | 200 lbs | $563,500 |
| McGinnis, Joey | SP | Free Agent | 16 | 08/13/2024 | Los Angeles | USA | Switch | Right | 6' 2" | 175 lbs | - |
| McGlothlin, Kevin | RP | Oakland Athletics | 36 | 03/31/2005 | Lewiston | USA | Right | Right | 6' 2" | 200 lbs | $15,800,000 |
| McGoldrick, Nate | SP | Free Agent | 21 | 11/22/2019 | Quincy | USA | Left | Left | 6' 5" | 205 lbs | - |
| McGonigal, Andy | C | Free Agent | 16 | 10/02/2024 | Port St. Lucie | USA | Right | Right | 5' 11" | 170 lbs | - |
| McGowan, Chris | SP | Free Agent | 16 | 05/03/2024 | Pierre | USA | Switch | Left | 6' 2" | 175 lbs | - |
| McGowan, Isaiah | 1B | Free Agent | 17 | 02/03/2024 | North Las Vegas | USA | Left | Left | 6' 2" | 205 lbs | - |
| McGowan, Jeff | SP | Miami Marlins | 27 | 09/10/2013 | Colonial Heights | USA | Right | Right | 5' 9" | 190 lbs | $563,500 |
| McGowan, Kevin | SP | Free Agent | 20 | 05/19/2020 | Granite City | USA | Left | Right | 6' 4" | 200 lbs | - |
| McGrath, Jeremy | RF | Free Agent | 17 | 02/17/2024 | Sunrise Manor | USA | Switch | Left | 6' 3" | 180 lbs | - |
| McGrath, Robbie | SP | Free Agent | 26 | 03/24/2015 | Cedar Rapids | USA | Left | Left | 6' 4" | 200 lbs | - |
| McGregor, Joe | SP | Free Agent | 16 | 07/28/2024 | Savoy | USA | Switch | Left | 6' 1" | 170 lbs | - |
| McGregor, Pat | RP | Free Agent | 21 | 04/30/2019 | New York | USA | Right | Right | 6' 2" | 200 lbs | - |
| McGuire, Sam | SP | Free Agent | 16 | 08/30/2024 | Pittsburgh | USA | Switch | Left | 6' 2" | 175 lbs | - |
| McHale, Eddie | C | Free Agent | 16 | 05/10/2024 | La Marque | USA | Right | Right | 6' 1" | 185 lbs | - |
| McInerney, Nate | SP | Free Agent | 17 | 08/17/2023 | Cambridge | USA | Left | Right | 6' 7" | 200 lbs | - |
| McIntire, Mike | LF | Free Agent | 25 | 01/23/2016 | Valley Stream | USA | Left | Right | 5' 10" | 205 lbs | - |
| McIntosh, Noel | SP | Free Agent | 18 | 10/24/2022 | Willingboro Township | USA | Right | Right | 6' 9" | 200 lbs | - |
| McKay, Joel | C | Free Agent | 18 | 10/11/2022 | Delano | USA | Right | Right | 6' 4" | 200 lbs | - |
| McKean, Dan | SP | Chicago White Sox | 28 | 08/12/2012 | London | USA | Switch | Right | 6' 3" | 195 lbs | $1,025,000 |
| McKechnie, Bobby | RP | Free Agent | 20 | 01/23/2021 | Greenbelt | USA | Left | Left | 6' 6" | 205 lbs | - |
| McKee, Danny | SP | Free Agent | 21 | 01/12/2020 | Owensboro | USA | Right | Right | 6' 0" | 185 lbs | - |
| McKee, Steve | 1B | Free Agent | 28 | 02/04/2013 | Arlington | USA | Right | Right | 6' 1" | 195 lbs | - |
| McKeithen, Eric | SP | Free Agent | 17 | 07/07/2023 | Tulsa | USA | Right | Right | 6' 2" | 175 lbs | - |
| McKelvey, T.J. | SP | Free Agent | 18 | 06/19/2022 | Chicago | USA | Right | Right | 6' 7" | 205 lbs | - |
| McKendrick, Joe | LF | Cleveland Indians | 25 | 10/12/2015 | Derry | USA | Left | Left | 6' 4" | 200 lbs | $563,500 |
| McKenna, Zach | C | Free Agent | 16 | 01/25/2025 | Brownsburg | USA | Right | Right | 6' 6" | 200 lbs | - |
| McKenney, Greg | SS | Free Agent | 20 | 09/25/2020 | Long Beach | USA | Right | Right | 6' 3" | 190 lbs | - |
| McKenzie, Dan | RP | Chicago White Sox | 28 | 07/15/2012 | Horseshoe Bay | USA | Right | Right | 6' 7" | 200 lbs | $2,200,000 |
| McKeogh, Steve | SP | Free Agent | 17 | 07/04/2023 | Miramar | USA | Right | Right | 6' 2" | 175 lbs | - |
| McKernan, Bobby | RF | Free Agent | 18 | 03/21/2023 | Alhambra | USA | Right | Right | 6' 3" | 175 lbs | - |
| McKinney, Danny | SP | Free Agent | 21 | 02/17/2020 | Tega Cay | USA | Left | Left | 6' 6" | 210 lbs | - |
| McKinney, Jayden | SP | Free Agent | 16 | 04/29/2025 | Baldwin Park | USA | Left | Right | 6' 0" | 160 lbs | - |
| McKinney, Mike | SP | Free Agent | 24 | 07/08/2016 | Worcester | USA | Left | Right | 5' 10" | 180 lbs | - |
| McLauchlan, Steve | SP | Free Agent | 22 | 11/12/2018 | Bellevue | USA | Switch | Right | 5' 11" | 175 lbs | - |
| McLaughlin, Bobby | RP | Tampa Bay Rays | 39 | 07/06/2001 | Detroit | USA | Left | Left | 6' 0" | 200 lbs | $2,500,000 |
| McLean, Steve | CF | Free Agent | 18 | 11/14/2022 | Pleasant Hill | USA | Right | Right | 5' 11" | 160 lbs | - |
| McLemore, Dusty | CF | Free Agent | 16 | 05/26/2024 | Twentynine Palms Base | USA | Left | Right | 6' 4" | 175 lbs | - |
| McLendon, Art | LF | Free Agent | 19 | 07/12/2021 | Wichita | USA | Right | Right | 6' 2" | 190 lbs | - |
| McLendon, Joe | SP | Free Agent | 17 | 08/14/2023 | Louisville | USA | Left | Right | 5' 10" | 160 lbs | - |
| McLendon, Jordan | RP | Los Angeles Angels | 34 | 12/25/2006 | Edison | USA | Left | Left | 6' 2" | 195 lbs | - |
| McLeod, Josh | SP | Free Agent | 24 | 02/06/2017 | Oakhurst | USA | Switch | Right | 6' 5" | 200 lbs | - |
| McManus, Eric | RP | Free Agent | 17 | 11/17/2023 | Birmingham | USA | Switch | Right | 6' 8" | 210 lbs | - |
| McMillion, Mike | SP | Free Agent | 19 | 11/26/2021 | Boston | USA | Right | Right | 6' 2" | 170 lbs | - |
| McMurray, Mike | RP | San Diego Padres | 30 | 02/05/2011 | Kingsport | USA | Switch | Left | 5' 10" | 200 lbs | $563,500 |
| McMurtry, Sean | SP | Free Agent | 20 | 07/22/2020 | Presque Isle | USA | Switch | Right | 6' 3" | 175 lbs | - |
| McNamara, Clint | RF | Free Agent | 17 | 06/18/2023 | El Reno | USA | Switch | Right | 6' 2" | 180 lbs | - |
| McNamara, Dorian | 2B | Free Agent | 16 | 06/28/2024 | Phoenix | USA | Right | Right | 6' 1" | 165 lbs | - |
| McNamara, Steve | SP | Free Agent | 22 | 09/11/2018 | Toledo | USA | Right | Right | 6' 1" | 180 lbs | - |
| McNeely, Steve | SP | Free Agent | 25 | 05/09/2015 | Brownsville | USA | Right | Right | 6' 2" | 200 lbs | - |
| McNeil, Pete | SP | Free Agent | 17 | 05/19/2023 | Baltimore | USA | Right | Right | 6' 1" | 175 lbs | - |
| McNelis, Derek | RP | Cleveland Indians | 30 | 02/11/2011 | Fairway | USA | Right | Right | 6' 4" | 200 lbs | - |
| McPartland, Marc | SP | Cincinnati Reds | 30 | 11/26/2010 | Green Haven | USA | Right | Right | 6' 6" | 200 lbs | $563,500 |
| McPartland, Ronnie | SP | Milwaukee Brewers | 35 | 02/22/2006 | Centralia | USA | Right | Right | 6' 1" | 200 lbs | $1,300,000 |
| McPherson, Joe | SS | Free Agent | 15 | 05/04/2025 | Derby | USA | Right | Right | 6' 2" | 165 lbs | - |
| McQueen, Malik | CF | Free Agent | 17 | 06/16/2023 | Baltimore | USA | Right | Right | 6' 2" | 175 lbs | - |
| McReynolds, Tim | SP | Free Agent | 18 | 10/02/2022 | Grafton | USA | Switch | Left | 6' 0" | 170 lbs | - |
| McWherter, Jeff | SP | Free Agent | 21 | 01/17/2020 | Independence | USA | Switch | Left | 6' 1" | 180 lbs | - |
| Mead, David | RP | Free Agent | 24 | 01/20/2017 | Troy | USA | Switch | Left | 6' 0" | 185 lbs | - |
| Meadows, Jeff | SP | Free Agent | 23 | 09/13/2017 | East Perrine | USA | Right | Right | 6' 2" | 200 lbs | - |
| Meals, Ethan | SP | Free Agent | 19 | 10/24/2021 | Lamont | USA | Right | Right | 6' 8" | 200 lbs | - |
| Mealy, Jonathan | C | Free Agent | 17 | 05/25/2023 | Phoenix | USA | Right | Right | 6' 2" | 185 lbs | - |
| Medel, Jon | 2B | Milwaukee Brewers | 16 | 02/23/2025 | Campoalegre | COL | Switch | Right | 5' 11" | 185 lbs | - |
| Medellin, Mike | SP | Free Agent | 17 | 06/13/2023 | Santa Rosa | USA | Right | Right | 5' 11" | 170 lbs | - |
| Medero, Robert | C | Tampa Bay Rays | 18 | 06/11/2022 | Higüey | DOM | Right | Right | 6' 5" | 200 lbs | - |
| Medin, Sam | SP | Free Agent | 19 | 07/16/2021 | Naperville | USA | Left | Left | 6' 7" | 195 lbs | - |
| Medina, Danny | RP | Free Agent | 32 | 02/10/2009 | Millcreek | USA | Left | Left | 6' 0" | 200 lbs | - |
| Medina, Frank | RF | Oakland Athletics | 16 | 12/12/2024 | Manicaragua | CUB | Right | Left | 5' 11" | 200 lbs | - |
| Medina, Jesus | SP | Miami Marlins | 18 | 11/06/2022 | Las Salinas | DOM | Left | Left | 6' 1" | 180 lbs | - |
| Medina, Jose | SP | Free Agent | 33 | 01/19/2008 | Highlands Ranch | USA | Left | Right | 6' 1" | 195 lbs | - |
| Medina, Juan | SP | Free Agent | 19 | 08/15/2021 | Burlington | USA | Switch | Right | 6' 4" | 190 lbs | - |
| Medina, Juan | 3B | Minnesota Twins | 19 | 05/17/2021 | Esperanza | DOM | Right | Right | 6' 0" | 190 lbs | - |
| Medina, Luis | LF | Atlanta Braves | 30 | 11/05/2010 | San Antonio de los Baños | CUB | Right | Right | 6' 4" | 215 lbs | $14,500,000 |
| Medina, Luis | SP | Free Agent | 22 | 07/26/2018 | Baltimore | USA | Right | Right | 6' 1" | 180 lbs | - |
| Medina, Manny | RP | Philadelphia Phillies | 28 | 08/23/2012 | San Cristóbal | CUB | Left | Left | 5' 11" | 185 lbs | $563,500 |
| Medina, Mario | RP | Miami Marlins | 32 | 12/21/2008 | Millcreek | USA | Right | Right | 6' 7" | 200 lbs | $4,124,200 |
| Medina, Sergio | CF | Tampa Bay Rays | 34 | 12/15/2006 | Santiago de Cuba | CUB | Right | Right | 6' 0" | 200 lbs | $8,000,000 |
| Medina, Victor | SP | Free Agent | 18 | 12/09/2022 | Carolina | PUR | Left | Left | 5' 11" | 165 lbs | - |
| Medina, Victor | SP | Free Agent | 22 | 10/02/2018 | Clearwater | USA | Right | Left | 6' 2" | 185 lbs | - |
| Medrano, Cesar | C | Free Agent | 17 | 07/13/2023 | San Diego | USA | Right | Right | 6' 0" | 185 lbs | - |
| Medrano, Jesus | SP | Free Agent | 17 | 09/30/2023 | Chicago | USA | Right | Right | 6' 1" | 170 lbs | - |
| Medrano, Jose | LF | Minnesota Twins | 30 | 09/07/2010 | South Bradenton | USA | Left | Left | 6' 5" | 200 lbs | $563,500 |
| Meeder, Tim | SP | Free Agent | 17 | 11/27/2023 | Beebe | USA | Left | Right | 6' 1" | 175 lbs | - |
| Meeker, Pat | C | Free Agent | 17 | 04/22/2024 | Modesto | USA | Switch | Right | 6' 6" | 195 lbs | - |
| Meeks, Andy | RP | Free Agent | 18 | 02/13/2023 | DeLand | USA | Right | Right | 6' 0" | 175 lbs | - |
| Meese, Jace | RF | Free Agent | 15 | 09/22/2025 | Sonoma | USA | Left | Left | 5' 10" | 160 lbs | - |
| Meeske, Chris | RP | Free Agent | 18 | 02/13/2023 | Tega Cay | USA | Right | Right | 6' 4" | 195 lbs | - |
| Meier, Mike | SP | Free Agent | 19 | 06/23/2021 | Ft. Worth | USA | Right | Right | 6' 4" | 180 lbs | - |
| Meigs, Chris | RP | New York Mets | 36 | 06/14/2004 | Brooklyn | USA | Right | Right | 6' 1" | 200 lbs | $5,040,000 |
| Meiners, J.D. | SP | Free Agent | 19 | 01/13/2022 | Los Angeles | USA | Right | Right | 5' 9" | 155 lbs | - |
| Meinhardt, Josh | SP | Cleveland Indians | 35 | 09/20/2005 | Paramount | USA | Right | Right | 6' 1" | 200 lbs | $1,300,000 |
| Meirelles, Belchyor | 1B | Free Agent | 32 | 07/06/2008 | Petare | VEN | Left | Left | 5' 11" | 200 lbs | - |
| Meisinger, Jim | SP | Free Agent | 23 | 02/03/2018 | Pennsauken Township | USA | Left | Left | 6' 3" | 200 lbs | - |
| Mejia, Al | LF | Colorado Rockies | 23 | 05/17/2017 | Chambas | CUB | Left | Left | 6' 4" | 210 lbs | $1,750,000 |
| Mejia, Alex | SP | Free Agent | 19 | 09/28/2021 | Tempe | USA | Switch | Right | 6' 2" | 180 lbs | - |
| Mejia, Alex | RP | Miami Marlins | 29 | 03/24/2012 | Otra Banda | DOM | Left | Left | 6' 4" | 200 lbs | $16,078,500 |
| Mejia, Arturo | RP | Free Agent | 19 | 11/30/2021 | Ft. Knox | USA | Left | Left | 6' 2" | 180 lbs | - |
| Mejia, Dave | 3B | Free Agent | 16 | 07/07/2024 | Worcester | USA | Right | Right | 6' 0" | 175 lbs | - |
| Mejia, Dave | SP | Atlanta Braves | 17 | 10/03/2023 | La Romana | DOM | Right | Right | 6' 1" | 175 lbs | - |
| Mejia, Ernesto | SP | Free Agent | 20 | 11/04/2020 | Ponce | PUR | Left | Left | 6' 0" | 175 lbs | - |
| Mejia, Luis | SP | Free Agent | 16 | 05/23/2024 | St. Louis | USA | Right | Right | 6' 5" | 190 lbs | - |
| Mejia, Steve | LF | Free Agent | 17 | 07/19/2023 | Thibodaux | USA | Right | Right | 6' 6" | 205 lbs | - |
| Melara, Jesus | C | Free Agent | 23 | 06/21/2017 | Bayamón | PUR | Switch | Right | 6' 0" | 195 lbs | - |
| Melby, Jon | SS | Kansas City Royals | 26 | 06/20/2014 | Dinwiddie | USA | Left | Right | 6' 0" | 200 lbs | $10,500,000 |
| Melendez, Angel | 1B | Free Agent | 20 | 06/29/2020 | Chicago | USA | Right | Right | 6' 1" | 200 lbs | - |
| Melendez, Derek | RP | Free Agent | 20 | 11/17/2020 | North Providence | USA | Right | Right | 6' 9" | 200 lbs | - |
| Melendez, Jose | SP | Free Agent | 21 | 11/13/2019 | Bloomington | USA | Left | Left | 5' 10" | 175 lbs | - |
| Melendy, Jeff | RP | Free Agent | 26 | 07/04/2014 | Camarillo | USA | Left | Left | 6' 1" | 200 lbs | - |
| Melia, Mike | 2B | Free Agent | 24 | 09/07/2016 | Arlington | USA | Right | Right | 5' 10" | 185 lbs | - |
| Melkumov, Tserun | RP | Free Agent | 18 | 05/28/2022 | Kenner | USA | Left | Left | 6' 2" | 175 lbs | - |
| Melrose, Gabe | SS | Free Agent | 18 | 10/11/2022 | Cocoa Beach | USA | Right | Right | 6' 2" | 185 lbs | - |
| Melton, Chris | SP | Free Agent | 20 | 09/30/2020 | Wichita | USA | Right | Right | 6' 2" | 180 lbs | - |
| Mena, Bob | RP | Free Agent | 32 | 12/10/2008 | Santiago de Cuba | CUB | Right | Right | 6' 4" | 200 lbs | - |
| Mendez, Alex | SP | Oakland Athletics | 17 | 04/16/2024 | Holguín | CUB | Right | Right | 6' 3" | 180 lbs | - |
| Mendez, Andy | SP | Free Agent | 20 | 05/18/2020 | Brooklyn | USA | Left | Right | 6' 0" | 180 lbs | - |
| Mendez, David | 1B | New York Yankees | 34 | 03/11/2007 | Caguas | PUR | Right | Right | 6' 5" | 200 lbs | $4,800,000 |
| Mendez, Jesus | SP | Arizona Diamondbacks | 31 | 04/17/2010 | Fajardo | PUR | Right | Right | 6' 2" | 195 lbs | $9,200,000 |
| Mendez, Joe | 2B | Free Agent | 18 | 06/26/2022 | Worcester | USA | Switch | Right | 6' 0" | 175 lbs | - |
| Mendez, Jonathan | SP | Free Agent | 16 | 08/23/2024 | Fairview (Bergen County) | USA | Left | Left | 6' 2" | 170 lbs | - |
| Mendez, Ricky | 2B | Free Agent | 15 | 08/17/2025 | Thousand Oaks | USA | Right | Right | 6' 2" | 165 lbs | - |
| Mendonca, Phil | RP | Milwaukee Brewers | 36 | 02/23/2005 | Glasgow | USA | Right | Right | 6' 4" | 200 lbs | $3,240,000 |
| Mendosa, Chris | SP | Free Agent | 20 | 04/16/2021 | Fairmont | USA | Right | Right | 5' 10" | 160 lbs | - |
| Mendoza, Arturo | RP | Baltimore Orioles | 27 | 08/29/2013 | Santo Domingo | DOM | Left | Right | 6' 0" | 180 lbs | $1,000,000 |
| Mendoza, Danny | SP | Free Agent | 18 | 05/17/2022 | Chester | USA | Right | Right | 6' 1" | 170 lbs | - |
| Mendoza, Danny | RP | Los Angeles Angels | 32 | 07/05/2008 | Licey al Medio | DOM | Left | Left | 6' 6" | 195 lbs | $563,500 |
| Mendoza, Elias | 1B | Free Agent | 20 | 11/21/2020 | Carolina | PUR | Right | Right | 6' 4" | 210 lbs | - |
| Mendoza, Luis | SP | Atlanta Braves | 17 | 02/16/2024 | Peralta | DOM | Left | Left | 5' 10" | 155 lbs | - |
| Mendoza, Ricky | LF | Free Agent | 20 | 01/09/2021 | Yauco | PUR | Right | Right | 5' 11" | 180 lbs | - |
| Mendoza, Tony | SP | Kansas City Royals | 16 | 11/02/2024 | Pimentel | DOM | Right | Right | 6' 3" | 180 lbs | - |
| Mendoza, Wil | 2B | Washington Nationals | 16 | 07/04/2024 | Rancho Arriba | DOM | Right | Right | 6' 2" | 200 lbs | - |
| Mendozas, Raul | SS | Free Agent | 16 | 12/27/2024 | Soledad | USA | Right | Right | 6' 2" | 175 lbs | - |
| Mengel, Chris | RP | Free Agent | 27 | 11/08/2013 | Levittown | USA | Right | Right | 6' 2" | 200 lbs | - |
| Menzies, Tim | SP | Free Agent | 18 | 05/26/2022 | Grand Junction | USA | Left | Left | 6' 1" | 175 lbs | - |
| Mercado, Alex | SP | Houston Astros | 32 | 11/28/2008 | Mayarí | CUB | Left | Right | 6' 7" | 200 lbs | $1,600,000 |
| Mercado, Danny | RF | Free Agent | 21 | 12/17/2019 | Denver | USA | Left | Left | 6' 2" | 195 lbs | - |
| Merchant, Tommy | SP | Free Agent | 20 | 09/09/2020 | Cushing | USA | Right | Right | 6' 2" | 175 lbs | - |
| Mercurio, Andy | SP | Free Agent | 26 | 08/12/2014 | Lake Magdalene | USA | Left | Left | 6' 6" | 200 lbs | - |
| Merida, Marco | SP | Free Agent | 17 | 11/24/2023 | Indianapolis | USA | Right | Right | 6' 6" | 195 lbs | - |
| Meriel, Chris | RP | Free Agent | 17 | 09/21/2023 | Sunrise | USA | Right | Right | 6' 2" | 175 lbs | - |
| Merkel, Jonathan | SP | Free Agent | 16 | 11/12/2024 | Peachtree City | USA | Right | Right | 6' 0" | 155 lbs | - |
| Merrell, Danny | SP | Free Agent | 17 | 03/17/2024 | Cherryville | USA | Right | Left | 6' 1" | 170 lbs | - |
| Merrick, Jeremy | CF | Free Agent | 18 | 10/02/2022 | San Diego | USA | Right | Right | 6' 0" | 170 lbs | - |
| Merrill, Ben | RP | Free Agent | 16 | 05/01/2024 | Dallas | USA | Left | Left | 6' 6" | 195 lbs | - |
| Merritt, Bobby | SP | Free Agent | 21 | 10/17/2019 | Hollywood | USA | Left | Left | 6' 7" | 205 lbs | - |
| Merritt, Steven | CF | Free Agent | 15 | 05/15/2025 | Brooklyn | USA | Left | Left | 6' 2" | 170 lbs | - |
| Mertens, Mike | 3B | Free Agent | 15 | 06/19/2025 | Shelton | USA | Right | Right | 6' 6" | 200 lbs | - |
| Mesa, Luis | RP | Free Agent | 18 | 01/13/2023 | Auburn | USA | Right | Right | 6' 2" | 180 lbs | - |
| Mesec, Ed | C | Texas Rangers | 25 | 11/25/2015 | Spring Valley | USA | Left | Right | 6' 2" | 200 lbs | $563,500 |
| Mesnard, Jeremy | 3B | Free Agent | 19 | 05/14/2021 | Houston | USA | Right | Right | 6' 1" | 180 lbs | - |
| Messenger, Chris | SP | Free Agent | 17 | 08/27/2023 | Rowlett | USA | Left | Right | 6' 4" | 185 lbs | - |
| Metcalf, Kevin | SP | Free Agent | 21 | 12/27/2019 | San Jose | USA | Left | Right | 6' 4" | 190 lbs | - |
| Meyer, Gene | SP | Free Agent | 23 | 01/09/2018 | Shawnee | USA | Right | Right | 6' 7" | 200 lbs | - |
| Meyer, Jeremy | 1B | New York Mets | 34 | 12/28/2006 | Cape Canaveral | USA | Left | Left | 6' 5" | 200 lbs | $2,600,000 |
| Meyer, Jim | SP | Free Agent | 33 | 11/21/2007 | Drain | USA | Right | Right | 6' 2" | 200 lbs | - |
| Meyer, Zane | C | Free Agent | 16 | 01/04/2025 | Ft. Wayne | USA | Right | Right | 6' 2" | 180 lbs | - |
| Meyers, Arlys | 2B | Free Agent | 18 | 01/19/2023 | Lancaster | USA | Right | Right | 6' 3" | 195 lbs | - |
| Meyers, Isaul | CF | New York Mets | 40 | 07/04/2000 | Painesville | USA | Left | Left | 6' 2" | 200 lbs | $5,000,000 |
| Meza, Alfredo | SP | Baltimore Orioles | 17 | 04/28/2024 | Puerto Plata | DOM | Right | Right | 6' 2" | 180 lbs | - |
| Meza, Gilberto | RF | Free Agent | 16 | 04/13/2025 | Haverhill | USA | Right | Right | 6' 4" | 185 lbs | - |
| Mhoon, Jayden | SP | Free Agent | 18 | 09/17/2022 | Newman | USA | Right | Right | 6' 10" | 210 lbs | - |
| Michal, Wally | SP | Free Agent | 16 | 07/20/2024 | San Jose | USA | Right | Right | 6' 4" | 180 lbs | - |
| Michaud, Mike | C | Free Agent | 17 | 06/20/2023 | Sugar Land | USA | Right | Right | 6' 2" | 200 lbs | - |
| Michniak, Erich | SP | Free Agent | 16 | 03/29/2025 | Fresno | USA | Right | Right | 6' 1" | 165 lbs | - |
| Mierzejewski, Joe | C | Free Agent | 18 | 11/06/2022 | North Sarasota | USA | Right | Right | 5' 11" | 190 lbs | - |
| Mikell, Colt | SP | Free Agent | 21 | 07/14/2019 | Macomb Township | USA | Right | Right | 6' 0" | 185 lbs | - |
| Mikrut, Devin | SS | Free Agent | 18 | 11/20/2022 | Windham | USA | Right | Right | 6' 2" | 175 lbs | - |
| Mikulsky, Sean | LF | Pittsburgh Pirates | 23 | 05/16/2017 | Philadelphia | USA | Left | Right | 6' 4" | 200 lbs | $563,500 |
| Milazzo, Rob | 3B | Milwaukee Brewers | 28 | 02/12/2013 | Montgomery | USA | Right | Right | 5' 10" | 190 lbs | $563,500 |
| Miles, Jim | 3B | Free Agent | 18 | 12/03/2022 | Norwich | USA | Right | Right | 6' 4" | 200 lbs | - |
| Miles, Marquise | RP | Free Agent | 19 | 11/04/2021 | Mesa | USA | Right | Right | 6' 2" | 180 lbs | - |
| Miles, Mike | RP | Free Agent | 17 | 02/15/2024 | San Antonio | USA | Right | Right | 6' 8" | 195 lbs | - |
| Miles, Sam | CL | Oakland Athletics | 27 | 12/11/2013 | Arlington | USA | Right | Right | 6' 1" | 200 lbs | $14,424,000 |
| Mill, Jerry | RP | Free Agent | 21 | 09/06/2019 | Winchester | USA | Right | Right | 5' 10" | 165 lbs | - |
| Millan, Ismael | C | Free Agent | 16 | 02/04/2025 | Kailua (Honolulu County) | USA | Right | Right | 6' 4" | 200 lbs | - |
| Millan, Zach | SP | Free Agent | 24 | 06/14/2016 | Lincoln | USA | Right | Right | 6' 4" | 200 lbs | - |
| Millen, Josh | SP | Free Agent | 20 | 08/10/2020 | Warner Robins | USA | Right | Right | 6' 0" | 170 lbs | - |
| Miller, Amir | CF | Free Agent | 18 | 04/20/2023 | Newburg | USA | Right | Right | 6' 2" | 165 lbs | - |
| Miller, Andy | RP | Free Agent | 18 | 09/29/2022 | Prior Lake | USA | Left | Left | 6' 1" | 175 lbs | - |
| Miller, Andy | SP | Free Agent | 21 | 10/22/2019 | Orland Park | USA | Right | Right | 6' 2" | 180 lbs | - |
| Miller, Chris | SP | Free Agent | 16 | 03/31/2025 | Seattle | USA | Left | Right | 5' 11" | 155 lbs | - |
| Miller, Chris | SP | Free Agent | 18 | 01/25/2023 | Skokie | USA | Left | Left | 6' 2" | 175 lbs | - |
| Miller, Chris | SP | Free Agent | 20 | 05/28/2020 | Richland | USA | Right | Right | 6' 6" | 190 lbs | - |
| Miller, Doug | RF | Free Agent | 16 | 11/30/2024 | Plano | USA | Right | Left | 6' 1" | 180 lbs | - |
| Miller, Jalen | SP | Free Agent | 16 | 02/09/2025 | Kentwood | USA | Switch | Right | 6' 4" | 180 lbs | - |
| Miller, Joe | SP | Free Agent | 21 | 08/21/2019 | Ft. Wayne | USA | Right | Right | 6' 1" | 180 lbs | - |
| Miller, Joel | RP | Free Agent | 18 | 06/08/2022 | Orono | USA | Right | Right | 6' 4" | 190 lbs | - |
| Miller, Jonathan | SP | Free Agent | 21 | 09/17/2019 | Winter Haven | USA | Right | Right | 6' 3" | 200 lbs | - |
| Miller, Jordan | 2B | Free Agent | 25 | 05/04/2015 | Pleasant Prairie | USA | Left | Right | 5' 11" | 180 lbs | - |
| Miller, Josh | RP | Free Agent | 15 | 05/04/2025 | Jennings Lodge | USA | Right | Right | 6' 4" | 185 lbs | - |
| Miller, Josh | SP | Free Agent | 17 | 03/21/2024 | Marion | USA | Right | Right | 6' 8" | 195 lbs | - |
| Miller, Josh | C | Free Agent | 21 | 01/05/2020 | Chicago | USA | Right | Right | 6' 0" | 190 lbs | - |
| Miller, Josh | SS | Free Agent | 17 | 05/01/2023 | Brooklyn | USA | Right | Right | 6' 3" | 185 lbs | - |
| Miller, Josh | 2B | Free Agent | 37 | 08/27/2003 | Pasadena | USA | Left | Right | 6' 4" | 195 lbs | - |
| Miller, Kai | LF | New York Yankees | 29 | 06/25/2011 | San Antonio | USA | Right | Right | 6' 0" | 200 lbs | $3,200,000 |
| Miller, Kurt | RF | Free Agent | 16 | 04/27/2025 | Alexandria | USA | Right | Right | 6' 0" | 170 lbs | - |
| Miller, Mike | CF | Free Agent | 16 | 07/16/2024 | Riverside | USA | Right | Right | 6' 2" | 185 lbs | - |
| Miller, Nate | C | Atlanta Braves | 29 | 01/06/2012 | Commerce Township | USA | Left | Right | 6' 4" | 220 lbs | $3,500,000 |
| Miller, Nate | SP | Philadelphia Phillies | 32 | 01/10/2009 | Sappington | USA | Left | Left | 6' 8" | 200 lbs | $33,000,000 |
| Miller, Piotr | SP | Free Agent | 30 | 08/25/2010 | Charlotte | USA | Right | Right | 6' 8" | 200 lbs | - |
| Miller, Steve | RP | Los Angeles Angels | 35 | 07/12/2005 | Tamiami | USA | Right | Right | 6' 8" | 200 lbs | - |
| Miller, Tim | SS | Free Agent | 16 | 08/08/2024 | Elizabeth | USA | Right | Right | 6' 1" | 160 lbs | - |
| Miller, Zach | SP | Free Agent | 16 | 05/14/2024 | Montgomery | USA | Right | Right | 6' 3" | 180 lbs | - |
| Miller Jr., Jalen | RP | Free Agent | 26 | 08/22/2014 | New York | USA | Left | Left | 6' 5" | 205 lbs | - |
| Milligan, Victor | RP | Free Agent | 18 | 04/15/2023 | Pleasant Hills | USA | Right | Right | 6' 6" | 185 lbs | - |
| Millikan, Danny | SP | Free Agent | 17 | 09/02/2023 | Boston | USA | Left | Left | 6' 4" | 185 lbs | - |
| Million, Kevin | RP | Free Agent | 25 | 07/04/2015 | Spanish Lake | USA | Left | Left | 5' 11" | 185 lbs | - |
| Mills, Chris | SP | Free Agent | 26 | 10/12/2014 | Las Vegas | USA | Right | Right | 6' 1" | 205 lbs | - |
| Mills, Oluwasayo | RF | Free Agent | 19 | 11/21/2021 | Claremont | USA | Left | Left | 6' 4" | 185 lbs | - |
| Mills, T.J. | 1B | Free Agent | 15 | 07/10/2025 | Gardena | USA | Left | Left | 6' 4" | 200 lbs | - |
| Mills, Tyrese | RF | Free Agent | 18 | 02/14/2023 | Metairie | USA | Switch | Right | 6' 4" | 195 lbs | - |
| Miltimore, Greg | 2B | San Diego Padres | 28 | 12/29/2012 | Fords | USA | Right | Right | 6' 4" | 200 lbs | $16,744,000 |
| Minard, Bobby | CF | Free Agent | 18 | 10/07/2022 | New York | USA | Left | Left | 5' 10" | 165 lbs | - |
| Mingus, Kevin | SP | Free Agent | 19 | 05/09/2021 | Parma | USA | Right | Right | 6' 6" | 200 lbs | - |
| Minnick, Charlie | RP | Free Agent | 18 | 07/07/2022 | Rolling Meadows | USA | Right | Right | 6' 2" | 185 lbs | - |
| Minore, Chris | CF | Free Agent | 16 | 04/15/2025 | Willoughby | USA | Right | Right | 6' 3" | 175 lbs | - |
| Minshull, Pat | SP | Free Agent | 18 | 06/05/2022 | Country Club | USA | Right | Right | 6' 3" | 170 lbs | - |
| Minton, Eric | SP | Free Agent | 15 | 10/03/2025 | San Jose | USA | Right | Right | 6' 2" | 170 lbs | - |
| Minton, Jamie | SS | Free Agent | 16 | 08/09/2024 | Eden | USA | Left | Right | 6' 4" | 170 lbs | - |
| Miranda, Alexis | CF | Free Agent | 18 | 09/07/2022 | Ponce | PUR | Right | Right | 6' 1" | 175 lbs | - |
| Miranda, Arturo | C | Free Agent | 16 | 10/19/2024 | New York | USA | Right | Right | 6' 3" | 195 lbs | - |
| Miranda, Arturo | SS | Atlanta Braves | 21 | 03/17/2020 | Carolina | PUR | Switch | Right | 6' 0" | 170 lbs | - |
| Miranda, Jesus | SP | Colorado Rockies | 27 | 09/17/2013 | Puerto Plata | DOM | Left | Left | 6' 4" | 200 lbs | $563,500 |
| Miranda, Mario | RF | Miami Marlins | 18 | 02/11/2023 | Moca | DOM | Left | Left | 6' 5" | 200 lbs | - |
| Miranda, Rich | 2B | Cleveland Indians | 24 | 05/30/2016 | Travilah | USA | Switch | Right | 6' 4" | 200 lbs | $563,500 |
| Mireles, Joaquin | SP | Free Agent | 28 | 03/19/2013 | Río Grande | PUR | Right | Right | 5' 11" | 185 lbs | - |
| Miron, Mario | RP | Free Agent | 15 | 11/14/2025 | Hickory | USA | Left | Left | 6' 2" | 175 lbs | - |
| Misco, Andy | RP | Free Agent | 17 | 09/27/2023 | Dallas | USA | Left | Left | 6' 3" | 185 lbs | - |
| Misenheimer, Freddie | 3B | Free Agent | 18 | 12/21/2022 | Little Rock | USA | Right | Right | 6' 2" | 195 lbs | - |
| Miskel, Josh | SP | Free Agent | 21 | 06/07/2019 | Locust Valley | USA | Right | Right | 5' 10" | 150 lbs | - |
| Misko, Jared | SP | Free Agent | 25 | 09/19/2015 | Corsicana | USA | Right | Right | 6' 1" | 195 lbs | - |
| Mitchel, Joey | C | Free Agent | 21 | 09/29/2019 | Bella Vista | USA | Switch | Right | 6' 4" | 200 lbs | - |
| Mitchel, Jon | SP | Free Agent | 17 | 09/19/2023 | Milwaukee | USA | Left | Left | 5' 9" | 155 lbs | - |
| Mitchell, Andy | RP | Free Agent | 19 | 05/12/2021 | El Segundo | USA | Left | Right | 5' 10" | 150 lbs | - |
| Mitchell, Brad | SP | Free Agent | 16 | 07/17/2024 | Olympia | USA | Right | Right | 6' 4" | 185 lbs | - |
| Mitchell, Chris | C | Free Agent | 18 | 10/01/2022 | Manchester | USA | Right | Right | 6' 3" | 190 lbs | - |
| Mitchell, Jim | RP | Free Agent | 25 | 07/12/2015 | Freeport | USA | Right | Right | 6' 1" | 190 lbs | - |
| Mitchell, Jon | SP | Free Agent | 16 | 07/22/2024 | Oakland | USA | Right | Right | 6' 2" | 180 lbs | - |
| Mitchell, Mike | SP | Free Agent | 21 | 10/20/2019 | Concord | USA | Right | Left | 6' 0" | 180 lbs | - |
| Mitchum, Steve | SP | Free Agent | 17 | 11/03/2023 | Chicago | USA | Right | Right | 6' 3" | 175 lbs | - |
| Mixon, Kevin | RP | Free Agent | 18 | 08/21/2022 | Burlington | USA | Right | Right | 5' 11" | 165 lbs | - |
| Mizell, Eric | 3B | Free Agent | 17 | 10/30/2023 | Boynton Beach | USA | Right | Right | 6' 2" | 185 lbs | - |
| Moes, Kaleb | RP | Free Agent | 16 | 04/09/2025 | Peoria | USA | Right | Right | 6' 7" | 195 lbs | - |
| Moffet, Jody | CF | Free Agent | 17 | 09/07/2023 | Goulds | USA | Right | Right | 6' 4" | 180 lbs | - |
| Moffett, Jeff | SP | Free Agent | 17 | 06/23/2023 | Hartford | USA | Right | Right | 6' 2" | 180 lbs | - |
| Mogul, Tim | SP | Free Agent | 15 | 09/09/2025 | Santa Ana | USA | Right | Right | 6' 2" | 170 lbs | - |
| Mohmand, Busuttil | RP | Free Agent | 27 | 01/16/2014 | Karachi | PAK | Right | Right | 6' 2" | 200 lbs | - |
| Mojarro, Danny | C | Free Agent | 18 | 09/07/2022 | Long Beach | USA | Right | Right | 6' 1" | 185 lbs | - |
| Mojica, Javy | SS | Minnesota Twins | 17 | 07/08/2023 | Contramaestre | CUB | Right | Right | 6' 3" | 180 lbs | - |
| Molenkamp, Zach | SP | Free Agent | 18 | 10/01/2022 | Forest Oaks | USA | Right | Right | 6' 0" | 175 lbs | - |
| Molina, Angel | C | Tampa Bay Rays | 18 | 07/19/2022 | Gonzalo | DOM | Switch | Right | 6' 1" | 190 lbs | - |
| Molina, Daniel | SP | Free Agent | 22 | 03/17/2019 | Guaynabo | PUR | Right | Right | 6' 7" | 205 lbs | - |
| Molina, Danny | RP | Free Agent | 28 | 09/10/2012 | Columbia | USA | Left | Right | 6' 0" | 200 lbs | - |
| Molina, Jim | SP | Free Agent | 16 | 11/20/2024 | Monterey Park | USA | Right | Right | 6' 4" | 180 lbs | - |
| Molina, Jorge | C | Free Agent | 17 | 11/07/2023 | San Juan | PUR | Right | Right | 5' 10" | 170 lbs | - |
| Molina, Marco | SP | Free Agent | 15 | 11/18/2025 | Bayamón | PUR | Left | Left | 5' 10" | 155 lbs | - |
| Molitor, Ian | SS | Free Agent | 18 | 01/28/2023 | Frankfort | USA | Right | Right | 6' 2" | 170 lbs | - |
| Moll, Ben | SP | Free Agent | 16 | 07/18/2024 | Poquoson | USA | Left | Left | 6' 5" | 185 lbs | - |
| Mollica, Dave | RP | Free Agent | 24 | 04/19/2017 | McAllen | USA | Left | Left | 6' 7" | 210 lbs | - |
| Moncada, Bob | 3B | Miami Marlins | 18 | 06/26/2022 | San Cristóbal | CUB | Right | Right | 6' 1" | 190 lbs | - |
| Monegro, Eddie | 3B | San Francisco Giants | 27 | 06/10/2013 | Orocovis | PUR | Switch | Right | 6' 0" | 180 lbs | $4,138,200 |
| Monford, Dave | SP | Free Agent | 16 | 03/05/2025 | Moriches | USA | Right | Right | 6' 7" | 195 lbs | - |
| Monges, Alex | C | Free Agent | 16 | 08/02/2024 | Fayetteville | USA | Right | Right | 6' 4" | 200 lbs | - |
| Monk, Chris | SP | Free Agent | 20 | 07/19/2020 | Hamden | USA | Left | Right | 6' 2" | 170 lbs | - |
| Monreal, Ernesto | SS | Milwaukee Brewers | 29 | 06/23/2011 | Rapids | USA | Switch | Right | 6' 2" | 200 lbs | $1,340,000 |
| Monroe, Chris | SP | Free Agent | 24 | 10/05/2016 | Tooele | USA | Left | Left | 6' 7" | 205 lbs | - |
| Monroe, Dan | SP | Free Agent | 25 | 10/15/2015 | Byron | USA | Right | Right | 6' 2" | 195 lbs | - |
| Monroe, Eric | RP | Free Agent | 17 | 09/07/2023 | Margate | USA | Left | Left | 6' 1" | 160 lbs | - |
| Monroe, Mike | SP | Free Agent | 18 | 04/30/2022 | Boise | USA | Left | Left | 6' 3" | 185 lbs | - |
| Monroy, Julio | 3B | Free Agent | 16 | 07/08/2024 | Nashville | USA | Left | Right | 6' 0" | 165 lbs | - |
| Monsivais, Rodolfo | RP | Free Agent | 18 | 11/14/2022 | Ponce | PUR | Right | Right | 6' 6" | 200 lbs | - |
| Montalvo, Jordan | SS | Free Agent | 17 | 06/28/2023 | Kenner | USA | Left | Right | 6' 4" | 180 lbs | - |
| Montano, Jose | RF | Free Agent | 21 | 03/29/2020 | Houston | USA | Right | Left | 6' 4" | 205 lbs | - |
| Montelongo, Jose | CL | Free Agent | 21 | 07/04/2019 | San Francisco | USA | Right | Right | 6' 2" | 195 lbs | - |
| Montenegro, Victor | SP | Atlanta Braves | 23 | 09/08/2017 | San Lorenzo | PUR | Right | Right | 6' 2" | 195 lbs | - |
| Montero, Angel | SP | New York Mets | 16 | 07/11/2024 | San Juan | PUR | Left | Right | 6' 3" | 180 lbs | - |
| Montero, Angel | SS | Tampa Bay Rays | 17 | 02/13/2024 | Bajos de Haina | DOM | Switch | Right | 6' 4" | 185 lbs | - |
| Montgomery, Joe | SP | Free Agent | 25 | 04/08/2016 | Salmon Creek | USA | Switch | Right | 6' 1" | 190 lbs | - |
| Montgomery, Mike | 3B | Free Agent | 21 | 12/15/2019 | North Brunswick Township | USA | Right | Right | 6' 2" | 195 lbs | - |
| Montgomery, Patrick | SP | Free Agent | 16 | 01/18/2025 | Wilkes-Barre | USA | Right | Right | 6' 7" | 190 lbs | - |
| Montgomery, Tim | SP | Free Agent | 22 | 06/27/2018 | Foster City | USA | Right | Right | 6' 0" | 180 lbs | - |
| Montiel, Hector | SP | Pittsburgh Pirates | 16 | 09/29/2024 | Peñuelas | PUR | Right | Right | 6' 6" | 195 lbs | - |
| Montiel, Luis | SS | Cincinnati Reds | 17 | 01/02/2024 | San Pedro de Macorís | DOM | Right | Right | 6' 0" | 165 lbs | - |
| Montiel, Luis | RP | Free Agent | 23 | 10/26/2017 | San Juan | PUR | Right | Right | 6' 0" | 190 lbs | - |
| Montoya, Danny | SP | Colorado Rockies | 16 | 02/14/2025 | Santo Domingo | DOM | Right | Right | 6' 2" | 165 lbs | - |
| Montoya, Edwin | RP | Free Agent | 33 | 11/14/2007 | Brookline | USA | Right | Right | 6' 1" | 200 lbs | - |
| Montoya, Ernie | SP | Oakland Athletics | 16 | 06/15/2024 | Nuevitas | CUB | Right | Right | 6' 3" | 185 lbs | - |
| Montoya, Jose | C | Free Agent | 25 | 02/07/2016 | Merton | USA | Right | Right | 6' 0" | 205 lbs | - |
| Montoya, Mike | SP | Free Agent | 29 | 06/26/2011 | Havana | CUB | Right | Left | 6' 1" | 200 lbs | - |
| Montoya, Oscar | RF | Toronto Blue Jays | 29 | 11/11/2011 | Havana | CUB | Right | Right | 5' 9" | 175 lbs | $1,300,000 |
| Montoya, Rene | SP | Free Agent | 17 | 09/10/2023 | San Lorenzo | PUR | Left | Left | 6' 8" | 200 lbs | - |
| Moody, Pat | RP | Free Agent | 16 | 12/13/2024 | Lake Mohegan | USA | Right | Right | 6' 3" | 185 lbs | - |
| Moon, Joe | SP | Free Agent | 25 | 11/24/2015 | Rock Island | USA | Left | Left | 6' 2" | 200 lbs | - |
| Moore, Dalton | RP | Philadelphia Phillies | 27 | 04/23/2014 | Phenix City | USA | Left | Right | 6' 5" | 200 lbs | $1,000,000 |
| Moore, Danny | SP | Free Agent | 21 | 11/23/2019 | Midlothian | USA | Left | Left | 6' 4" | 195 lbs | - |
| Moore, Dave | CL | Free Agent | 22 | 01/14/2019 | Arlington | USA | Right | Right | 5' 9" | 170 lbs | - |
| Moore, Devon | LF | Free Agent | 16 | 09/24/2024 | Santa Barbara | USA | Switch | Right | 6' 4" | 195 lbs | - |
| Moore, Eric | SP | Free Agent | 21 | 07/14/2019 | Somerton | USA | Switch | Right | 6' 1" | 180 lbs | - |
| Moore, George | SP | Free Agent | 22 | 12/04/2018 | Santa Clarita | USA | Right | Right | 5' 9" | 170 lbs | - |
| Moore, Jared | LF | Texas Rangers | 26 | 03/08/2015 | King | USA | Right | Right | 6' 0" | 185 lbs | $563,500 |
| Moore, Jeremy | RP | Kansas City Royals | 28 | 09/21/2012 | Los Angeles | USA | Right | Right | 6' 11" | 225 lbs | $563,500 |
| Moore, Justin | RP | Free Agent | 24 | 04/19/2017 | Lynwood | USA | Right | Right | 6' 0" | 180 lbs | - |
| Moore, Mark | CF | Free Agent | 17 | 09/19/2023 | McKinney | USA | Right | Right | 6' 2" | 190 lbs | - |
| Moore, Mike | SP | Free Agent | 21 | 09/25/2019 | Salinas | USA | Right | Right | 6' 2" | 195 lbs | - |
| Moore, Mike | SS | Free Agent | 18 | 01/30/2023 | Allen Park | USA | Right | Right | 6' 2" | 185 lbs | - |
| Moore, Mike | RP | New York Yankees | 38 | 01/22/2003 | Millen | USA | Right | Right | 6' 1" | 200 lbs | $2,640,000 |
| Moore, Steve | SP | Free Agent | 22 | 09/24/2018 | Cleveland | USA | Left | Left | 6' 11" | 200 lbs | - |
| Moore, Steve | RP | Detroit Tigers | 24 | 06/14/2016 | Chicago | USA | Left | Left | 6' 2" | 195 lbs | $563,500 |
| Moore, Tristan | C | Free Agent | 16 | 11/09/2024 | Concord | USA | Right | Right | 6' 1" | 190 lbs | - |
| Moore, Vince | 3B | Free Agent | 16 | 12/30/2024 | Altadena | USA | Right | Right | 6' 3" | 200 lbs | - |
| Moorehead, Pat | SP | Free Agent | 18 | 08/07/2022 | Stony Brook | USA | Right | Right | 5' 10" | 155 lbs | - |
| Mora, Ernie | CL | Cincinnati Reds | 26 | 10/05/2014 | Casa Grande | USA | Right | Right | 6' 3" | 200 lbs | $563,500 |
| Mora, Leo | SP | Free Agent | 16 | 08/03/2024 | Las Piedras | PUR | Right | Right | 6' 8" | 200 lbs | - |
| Mora, Manny | SS | Free Agent | 17 | 05/25/2023 | Pico Rivera | USA | Right | Right | 6' 0" | 170 lbs | - |
| Mora, Oscar | CF | Free Agent | 18 | 09/16/2022 | Dallas | USA | Right | Right | 6' 1" | 175 lbs | - |
| Mora, Sergio | 1B | Chicago White Sox | 18 | 10/18/2022 | Puerto Padre | CUB | Left | Right | 6' 5" | 215 lbs | - |
| Mora, Tommy | SP | Free Agent | 18 | 03/21/2023 | Ridgeland | USA | Left | Right | 6' 4" | 190 lbs | - |
| Morales, Bob | CF | Los Angeles Dodgers | 17 | 10/01/2023 | Santiago | DOM | Left | Left | 6' 1" | 170 lbs | - |
| Morales, Edwin | C | New York Yankees | 17 | 10/15/2023 | Havana | CUB | Right | Right | 6' 2" | 190 lbs | - |
| Morales, Jeremy | RP | Free Agent | 28 | 11/27/2012 | Flower Mound | USA | Right | Right | 5' 10" | 200 lbs | - |
| Morales, Jesus | SP | Free Agent | 32 | 08/08/2008 | San Juan de la Maguana | DOM | Right | Right | 6' 4" | 200 lbs | - |
| Morales, Julio | RP | Free Agent | 25 | 02/28/2016 | Hamburg | USA | Switch | Right | 6' 2" | 195 lbs | - |
| Morales, Leonardo | SP | Free Agent | 22 | 04/13/2019 | Stigler | USA | Left | Left | 6' 2" | 195 lbs | - |
| Morales, Manny | RP | Tampa Bay Rays | 31 | 07/07/2009 | Santo Domingo | DOM | Left | Right | 6' 7" | 200 lbs | $4,800,000 |
| Morales, Mike | CF | Free Agent | 16 | 06/28/2024 | Springdale | USA | Left | Right | 6' 0" | 170 lbs | - |
| Morales, Omar | 2B | Tampa Bay Rays | 18 | 11/10/2022 | Santo Domingo | DOM | Right | Right | 6' 4" | 190 lbs | - |
| Morales, Ricky | SP | Chicago Cubs | 17 | 06/04/2023 | Santiago de Cuba | CUB | Right | Right | 6' 1" | 175 lbs | - |
| Morales, Tim | C | Free Agent | 17 | 07/13/2023 | Goose Creek | USA | Right | Right | 6' 1" | 185 lbs | - |
| Moran, Alex | CF | Free Agent | 21 | 12/01/2019 | Hanford | USA | Right | Right | 6' 1" | 185 lbs | - |
| Moran, Melvin | RP | St. Louis Cardinals | 30 | 07/20/2010 | Las Yayas de Viajama | DOM | Left | Left | 5' 11" | 195 lbs | $1,200,000 |
| Morejon, Felix | C | Tampa Bay Rays | 17 | 07/07/2023 | Santo Domingo | DOM | Right | Right | 6' 0" | 180 lbs | - |
| Morejon, Willie | RP | Milwaukee Brewers | 30 | 08/10/2010 | El Paso | USA | Left | Left | 6' 1" | 200 lbs | $8,500,000 |
| Moreland, Mitch | SP | Free Agent | 21 | 10/28/2019 | Twin Falls | USA | Left | Left | 6' 5" | 195 lbs | - |
| Moreno, Alex | C | Washington Nationals | 16 | 05/02/2024 | Palmar de Ocoa | DOM | Right | Right | 6' 0" | 175 lbs | - |
| Moreno, Chris | 2B | Free Agent | 22 | 03/12/2019 | New York | USA | Right | Right | 6' 2" | 190 lbs | - |
| Moreno, Edward | RP | Free Agent | 28 | 07/18/2012 | Owensville | USA | Left | Right | 6' 5" | 200 lbs | - |
| Moreno, Juan | 2B | Texas Rangers | 18 | 03/29/2023 | Santo Domingo | DOM | Right | Right | 6' 2" | 175 lbs | - |
| Moreno, Vic | RP | Los Angeles Angels | 33 | 09/20/2007 | Havana | CUB | Left | Right | 6' 1" | 200 lbs | - |
| Moreno, Wil | SP | Colorado Rockies | 32 | 05/20/2008 | Havana | CUB | Left | Left | 6' 6" | 200 lbs | - |
| Morey, Eddie | C | Milwaukee Brewers | 28 | 02/10/2013 | Phoenix | USA | Right | Right | 6' 6" | 220 lbs | $563,500 |
| Morgan, Brad | SP | Free Agent | 17 | 11/08/2023 | Dracut | USA | Left | Left | 6' 1" | 175 lbs | - |
| Morgan, Jeremy | SP | Free Agent | 16 | 06/25/2024 | Colmar Manor | USA | Left | Left | 6' 5" | 185 lbs | - |
| Moriarty, Pat | SP | Houston Astros | 33 | 01/17/2008 | Lincoln Park | USA | Right | Right | 5' 9" | 185 lbs | $1,200,000 |
| Morikawa, Akihito | SP | Free Agent | 32 | 10/13/2008 | Fussa | JPN | Left | Left | 6' 4" | 205 lbs | - |
| Morin, Danny | SP | Free Agent | 18 | 06/07/2022 | Eagan | USA | Right | Right | 6' 0" | 170 lbs | - |
| Morison, Steve | SP | Free Agent | 16 | 05/18/2024 | LaFayette | USA | Switch | Right | 6' 7" | 200 lbs | - |
| Moritz, Andy | SP | Free Agent | 17 | 09/09/2023 | Dublin | USA | Right | Right | 6' 4" | 185 lbs | - |
| Morley, Sam | SP | Free Agent | 21 | 10/02/2019 | Marion | USA | Left | Left | 6' 5" | 200 lbs | - |
| Morrales, Mike | SS | Free Agent | 22 | 06/05/2018 | Lincoln | USA | Right | Right | 6' 2" | 190 lbs | - |
| Morrell, Jimmy | SP | Free Agent | 18 | 11/15/2022 | Plymouth | USA | Left | Right | 6' 6" | 195 lbs | - |
| Morrell, Ken | 2B | Free Agent | 17 | 04/27/2024 | Jackson | USA | Left | Right | 6' 5" | 185 lbs | - |
| Morris, Andy | C | Houston Astros | 29 | 01/05/2012 | Miramar Beach | USA | Switch | Right | 6' 7" | 200 lbs | $1,560,000 |
| Morris, Brad | SP | Free Agent | 18 | 03/21/2023 | Lake in the Hills | USA | Right | Right | 6' 8" | 200 lbs | - |
| Morris, Chris | RP | Free Agent | 25 | 06/12/2015 | Long Beach | USA | Right | Right | 6' 6" | 210 lbs | - |
| Morris, Eric | CF | Free Agent | 17 | 11/05/2023 | Indianapolis | USA | Right | Right | 6' 0" | 170 lbs | - |
| Morris, Mike | SP | Free Agent | 17 | 12/23/2023 | Portland | USA | Right | Right | 6' 4" | 185 lbs | - |
| Morris, Mike | CF | Free Agent | 17 | 05/27/2023 | North Richland Hills | USA | Right | Right | 6' 2" | 180 lbs | - |
| Morris, Nigel | SP | Free Agent | 26 | 03/18/2015 | Dallas | USA | Right | Left | 6' 0" | 185 lbs | - |
| Morris, Roman | RP | Free Agent | 17 | 10/13/2023 | South Whittier | USA | Right | Left | 6' 8" | 200 lbs | - |
| Morris, Steve | RP | Miami Marlins | 23 | 02/05/2018 | Knik-Fairview | USA | Left | Left | 5' 9" | 170 lbs | - |
| Morris, Zach | SP | Free Agent | 17 | 10/10/2023 | North Attleborough | USA | Left | Right | 6' 2" | 175 lbs | - |
| Morrison, Dave | SP | Free Agent | 17 | 10/18/2023 | Columbia | USA | Right | Right | 6' 1" | 175 lbs | - |
| Morrison, Josh | LF | New York Yankees | 25 | 11/05/2015 | Alden | USA | Right | Right | 5' 10" | 180 lbs | $563,500 |
| Morrison, Kevin | RP | Free Agent | 17 | 11/03/2023 | Gastonia | USA | Right | Right | 6' 5" | 185 lbs | - |
| Morrow, Christian | C | Free Agent | 17 | 07/14/2023 | Carol Stream | USA | Right | Right | 6' 2" | 195 lbs | - |
| Morton, Josh | RP | Free Agent | 16 | 11/14/2024 | La Crosse | USA | Right | Right | 6' 5" | 180 lbs | - |
| Morton, Nate | SP | Free Agent | 18 | 03/27/2023 | Fitchburg | USA | Right | Right | 5' 11" | 165 lbs | - |
| Morton, Steve | RP | Free Agent | 28 | 03/10/2013 | Battle Ground | USA | Switch | Left | 6' 2" | 195 lbs | - |
| Morton, Tim | SS | Free Agent | 16 | 08/07/2024 | New York | USA | Switch | Right | 6' 0" | 160 lbs | - |
| Moseley, Justin | 3B | Cleveland Indians | 24 | 03/13/2017 | Roanoke | USA | Right | Right | 6' 0" | 180 lbs | $563,500 |
| Mosley, Elijah | SP | Free Agent | 18 | 10/12/2022 | Little Rock | USA | Right | Right | 6' 5" | 190 lbs | - |
| Moss, Mike | SP | Free Agent | 18 | 01/31/2023 | Tucson | USA | Left | Left | 6' 3" | 185 lbs | - |
| Mossor, Danny | CF | Free Agent | 21 | 01/06/2020 | Madison | USA | Right | Left | 6' 0" | 180 lbs | - |
| Mott, Ben | 3B | Free Agent | 16 | 08/24/2024 | Los Angeles | USA | Right | Right | 6' 1" | 180 lbs | - |
| Motz, Mike | SP | Free Agent | 16 | 09/01/2024 | Beloit | USA | Right | Right | 6' 2" | 170 lbs | - |
| Moultrie, Joe | SS | Washington Nationals | 36 | 04/13/2005 | Fayetteville | USA | Right | Right | 6' 3" | 200 lbs | $8,000,000 |
| Moure, Sergio | RP | Free Agent | 23 | 04/09/2018 | San Diego | USA | Right | Right | 6' 6" | 200 lbs | - |
| Mowatt, Robby | RF | Free Agent | 16 | 12/21/2024 | Sacramento | USA | Left | Left | 6' 4" | 190 lbs | - |
| Moya, Tony | SP | Minnesota Twins | 16 | 07/03/2024 | Santo Domingo | DOM | Right | Right | 6' 3" | 180 lbs | - |
| Moyer, Jeremy | 2B | Free Agent | 18 | 07/23/2022 | Oceanside | USA | Left | Right | 6' 0" | 175 lbs | - |
| Mrazek, Josh | SP | Free Agent | 18 | 01/25/2023 | Columbus | USA | Right | Right | 6' 2" | 180 lbs | - |
| Mroczka, Layonel | SP | Free Agent | 16 | 02/27/2025 | Arlington | USA | Switch | Right | 6' 1" | 165 lbs | - |
| Mrowka, Jake | CF | Free Agent | 20 | 12/01/2020 | Johns Creek | USA | Right | Right | 6' 3" | 190 lbs | - |
| Mruk, Phil | SP | Free Agent | 22 | 11/15/2018 | Norman | USA | Left | Right | 6' 2" | 190 lbs | - |
| Mueller, Dusty | SP | Free Agent | 16 | 08/19/2024 | Kansas City | USA | Right | Right | 6' 2" | 180 lbs | - |
| Mueller, Ian | 2B | Free Agent | 17 | 07/25/2023 | Bristol | USA | Right | Right | 6' 1" | 185 lbs | - |
| Muffley, Ed | SP | Pittsburgh Pirates | 23 | 03/25/2018 | Madison Heights | USA | Right | Right | 6' 2" | 185 lbs | $563,500 |
| Muhlenkamp, Eli | SP | Washington Nationals | 38 | 08/02/2002 | Annapolis | USA | Right | Right | 6' 4" | 200 lbs | $563,500 |
| Muhr, Jeff | 3B | Free Agent | 18 | 02/10/2023 | Dallas | USA | Switch | Right | 6' 6" | 200 lbs | - |
| Muise, Chris | RP | Baltimore Orioles | 30 | 09/29/2010 | San Diego | USA | Switch | Right | 6' 5" | 200 lbs | $563,500 |
| Mujica, Leo | 2B | Free Agent | 22 | 03/31/2019 | Hamden | USA | Switch | Right | 6' 0" | 190 lbs | - |
| Mullings, Josh | 3B | Free Agent | 20 | 08/08/2020 | Dayton | USA | Right | Right | 5' 11" | 185 lbs | - |
| Mullins, Benny | SP | Free Agent | 21 | 12/07/2019 | Holloman AFB | USA | Right | Right | 6' 6" | 185 lbs | - |
| Mullins, Jimmy | SP | Free Agent | 21 | 10/05/2019 | Kansas City | USA | Left | Left | 6' 1" | 180 lbs | - |
| Mullins, Mike | 3B | Free Agent | 18 | 03/02/2023 | Olympia | USA | Right | Right | 6' 4" | 195 lbs | - |
| Mulnix, Gabe | C | Free Agent | 18 | 11/05/2022 | Gulf Gate Estates | USA | Right | Right | 6' 5" | 200 lbs | - |
| Mundo, Eddie | RP | Atlanta Braves | 24 | 05/25/2016 | Caguas | PUR | Right | Right | 6' 7" | 215 lbs | $563,500 |
| Munguia, Dave | SP | Free Agent | 21 | 06/19/2019 | Forest Park | USA | Right | Right | 6' 3" | 185 lbs | - |
| Muniz, Mario | SP | Pittsburgh Pirates | 16 | 10/27/2024 | Matanzas | CUB | Right | Right | 6' 7" | 200 lbs | - |
| Munoz, Bert | SP | Free Agent | 22 | 11/22/2018 | Newark | USA | Left | Left | 6' 4" | 195 lbs | - |
| Munoz, Dave | SP | Free Agent | 19 | 10/07/2021 | Las Vegas | USA | Right | Right | 6' 3" | 185 lbs | - |
| Munoz, Hector | SP | Free Agent | 17 | 10/27/2023 | Caguas | PUR | Left | Right | 6' 6" | 205 lbs | - |
| Munoz, Ismael | SP | St. Louis Cardinals | 19 | 07/14/2021 | Artemisa | CUB | Left | Left | 6' 7" | 200 lbs | - |
| Munoz, Jorge | CF | Free Agent | 17 | 04/26/2024 | Carolina | PUR | Right | Right | 6' 4" | 175 lbs | - |
| Munoz, Jose | SP | Free Agent | 17 | 07/18/2023 | Santa Venetia | USA | Right | Right | 6' 8" | 200 lbs | - |
| Munoz, Jose | SP | Free Agent | 28 | 05/17/2012 | Ester | USA | Left | Left | 6' 2" | 205 lbs | - |
| Munoz, Leonel | SP | Pittsburgh Pirates | 17 | 04/13/2024 | El Peñón | DOM | Left | Left | 6' 1" | 170 lbs | - |
| Munoz, Melvin | SS | New York Mets | 16 | 05/10/2024 | Nizao | DOM | Right | Right | 6' 0" | 165 lbs | - |
| Munoz, Ramon | SP | Toronto Blue Jays | 18 | 09/13/2022 | Sagua la Grande | CUB | Left | Right | 6' 3" | 185 lbs | - |
| Munoz, Rick | SP | Baltimore Orioles | 18 | 02/21/2023 | Santo Domingo | DOM | Right | Right | 6' 4" | 190 lbs | - |
| Munoz, Tony | CF | Free Agent | 18 | 04/08/2023 | Jacksonville | USA | Right | Right | 6' 4" | 190 lbs | - |
| Munson, Chaz | CF | Free Agent | 17 | 08/04/2023 | Cherry Hills Village | USA | Left | Left | 6' 1" | 170 lbs | - |
| Munson, Phil | SP | Free Agent | 17 | 12/22/2023 | Killeen | USA | Left | Right | 6' 4" | 195 lbs | - |
| Muratalla, Julio | SP | St. Louis Cardinals | 16 | 08/23/2024 | Santa Clara | CUB | Right | Right | 6' 2" | 175 lbs | - |
| Muratalla, Sal | 1B | Milwaukee Brewers | 17 | 10/22/2023 | Cifuentes | CUB | Left | Left | 6' 2" | 185 lbs | - |
| Murawski, Jeff | 2B | Free Agent | 16 | 10/04/2024 | Brooklyn | USA | Right | Right | 6' 0" | 155 lbs | - |
| Murguia, Mike | RP | Free Agent | 20 | 05/15/2020 | Washington | USA | Right | Right | 6' 4" | 200 lbs | - |
| Murillo, Rich | RF | Free Agent | 20 | 07/17/2020 | Dorado | PUR | Left | Left | 6' 4" | 205 lbs | - |
| Murillo, Willie | RF | Colorado Rockies | 17 | 04/04/2024 | Santiago de Cuba | CUB | Left | Left | 6' 1" | 195 lbs | - |
| Muro, Mitch | CL | Toronto Blue Jays | 23 | 04/16/2018 | Arlington | USA | Left | Left | 5' 11" | 175 lbs | $563,500 |
| Murphy, Eric | RP | Free Agent | 21 | 10/09/2019 | Campbell | USA | Right | Right | 5' 10" | 175 lbs | - |
| Murphy, Jim | CL | Free Agent | 20 | 06/16/2020 | Pinckney | USA | Right | Right | 6' 0" | 185 lbs | - |
| Murphy, Jon | C | Free Agent | 18 | 01/29/2023 | Chandler | USA | Left | Right | 6' 0" | 190 lbs | - |
| Murphy, Ken | SP | Free Agent | 21 | 07/04/2019 | Garner | USA | Right | Right | 6' 6" | 200 lbs | - |
| Murphy, Kevin | RP | Free Agent | 18 | 06/15/2022 | Garden Acres | USA | Right | Right | 6' 2" | 170 lbs | - |
| Murphy, Ron | LF | Free Agent | 17 | 07/23/2023 | Hickory Hills | USA | Right | Right | 6' 5" | 195 lbs | - |
| Murphy, Steve | SP | Free Agent | 20 | 06/17/2020 | King of Prussia | USA | Right | Right | 6' 5" | 200 lbs | - |
| Murphy, Tim | 3B | Free Agent | 20 | 01/15/2021 | Meridian | USA | Right | Right | 6' 3" | 205 lbs | - |
| Murray, Ed | 1B | Free Agent | 18 | 10/28/2022 | Springfield | USA | Right | Right | 6' 2" | 210 lbs | - |
| Murray, Josh | RF | Free Agent | 38 | 03/01/2003 | Plant City | USA | Right | Right | 6' 5" | 200 lbs | - |
| Murray, Kris | SP | Free Agent | 21 | 06/06/2019 | Walnut Creek | USA | Right | Right | 6' 1" | 180 lbs | - |
| Murray, Rob | C | Free Agent | 17 | 05/01/2023 | North Lauderdale | USA | Right | Right | 5' 11" | 170 lbs | - |
| Murray, Steve | SP | Free Agent | 20 | 07/08/2020 | New York | USA | Switch | Right | 6' 1" | 190 lbs | - |
| Murrell, Ahmed | SP | Free Agent | 26 | 02/02/2015 | Barnhart | USA | Switch | Right | 6' 4" | 200 lbs | - |
| Murry, Eric | 2B | Free Agent | 17 | 10/12/2023 | Mesa | USA | Switch | Right | 6' 1" | 175 lbs | - |
| Musson, Tommy | LF | Free Agent | 18 | 07/07/2022 | Folsom | USA | Switch | Right | 6' 2" | 200 lbs | - |
| Mutitu, Mehdi | RF | Houston Astros | 18 | 07/29/2022 | Welkom | RSA | Left | Left | 6' 3" | 185 lbs | - |
| Muzquiz, Melvin | SP | Free Agent | 30 | 06/12/2010 | Sancti Spíritus | CUB | Left | Left | 6' 2" | 195 lbs | - |
| Myers, Jared | SP | Free Agent | 17 | 11/18/2023 | White Oak | USA | Switch | Right | 5' 10" | 165 lbs | - |
| Myers, Rob | SP | Free Agent | 18 | 11/23/2022 | Pemberville | USA | Left | Left | 5' 11" | 155 lbs | - |
| Mylander, Jeremy | CF | Philadelphia Phillies | 25 | 08/23/2015 | Mt. Airy | USA | Left | Right | 6' 4" | 200 lbs | $3,610,800 |
| Myles, Jim | SP | Free Agent | 21 | 02/13/2020 | Pleasant Hill | USA | Switch | Right | 6' 2" | 190 lbs | - |
