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| Monday, May 23rd , 1904 |
|---|
| Promoted RF Alfredo Almeida to Major League Anasco. |
| Received SP Eulalio Castillo from Major League Anasco. |
| Sunday, May 15th , 1904 |
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| Promoted RF Samuel Montoy to Major League Anasco. |
| Saturday, May 7th , 1904 |
|---|
| Placed 3B Armando Castellanos on the 7-day injured list, retroactive to 05/04/1904. |
| Monday, May 2nd , 1904 |
|---|
| Released 3B Arquímedes Gómez. |
| Released SP Eugenio Zaragoza. |
| SP Álvar Treviño joins the team. |
| SP Jesús González joins the team. |
| RP Filiberto Márquez joins the team. |
| RP Pedro Delgado joins the team. |
| C Benicio de la Pena joins the team. |
| 1B Luis Reyes joins the team. |
| 2B Samuel Montoy joins the team. |
| SS Panagiotes Zayas joins the team. |
| LF Ladislao Montenegro joins the team. |
| CF Zabulón Jiménez joins the team. |
| 2B Heriberto Rodríguez joins the team. |
| 1B Alfredo Miera joins the team. |
| SS Jaime Acevedo joins the team. |
| 2B Ramón Alvarado joins the team. |
| SS Atilano Barajas joins the team. |
| 1B Gustavo Galindo joins the team. |
| CF Edén Argüelles joins the team. |
| LF Enrique Lobo joins the team. |
| LF Miguel Elías joins the team. |
| RF Diomedes Mendoza joins the team. |
| LF Néstor Ayes joins the team. |
| RF Alfredo Almeida joins the team. |
| 3B Isidoro Torres joins the team. |
| Monday, April 4th , 1904 |
|---|
| Received RP Ezequiel Ramos from Major League Anasco. |
| Received RP Eufemio Roque from Major League Anasco. |
| Received RP Eugenio Zaragoza from Major League Anasco. |
| Received RP Hugo Suazo from Major League Anasco. |
| Received RP Zeferino Zalazar from Major League Anasco. |
| Received C Julio Echevarría from Major League Anasco. |
| Received C Bolívar Salinas from Major League Anasco. |
| Received 1B Armando Castellanos from Major League Anasco. |
| Received 2B Alarico Moreno from Major League Anasco. |
| Received 3B Rafael Almeida from Major League Anasco. |
| Received RP Jaime Contín from Major League Anasco. |
| Received 3B Arquímedes Gómez from Major League Anasco. |
| Monday, March 28th , 1904 |
|---|
| Received RP Mulroney Daniels from Major League Anasco. |
| Monday, February 22nd , 1904 |
|---|
| Promoted SP Troilo Carrillo to Major League Anasco. |
| Promoted RP Emerson Pye to Major League Anasco. |
| Promoted RP Mulroney Daniels to Major League Anasco. |
| Promoted SP Eugenio Zaragoza to Major League Anasco. |
| Promoted RP Guillermo Miranda to Major League Anasco. |
| Promoted SP Felipe Cortés to Major League Anasco. |
| Promoted RP Reece Field to Major League Anasco. |
| Promoted RP Charlie Moran to Major League Anasco. |
| Promoted RF Amérigo Delgado to Major League Anasco. |
| Promoted LF Hermenegildo Quintana to Major League Anasco. |
| Promoted 2B Alarico Moreno to Major League Anasco. |
| Promoted C Julio Echevarría to Major League Anasco. |
| Promoted 3B Rafael Almeida to Major League Anasco. |
| Promoted C Bolívar Salinas to Major League Anasco. |
| Promoted 1B Armando Castellanos to Major League Anasco. |
| Promoted RP Miguel Escobedo to Major League Anasco. |
| Promoted RP Alfie Buckfield to Major League Anasco. |
| Promoted RP Getulio Barrientos to Major League Anasco. |
| Promoted SP Frédéric Sanchez to Major League Anasco. |
| Promoted RP Eufemio Roque to Major League Anasco. |
| Promoted RP Ezequiel Ramos to Major League Anasco. |
| Promoted RP Pedro Martínez to Major League Anasco. |
| Promoted RP Guarionex Romero to Major League Anasco. |
| Promoted RP Hugo Suazo to Major League Anasco. |
| Promoted RP Zeferino Zalazar to Major League Anasco. |
| Promoted RP Jaime Contín to Major League Anasco. |
| Friday, February 19th , 1904 |
|---|
| Promoted RF Roberto Vázquez to Major League Anasco. |
| Received RP Getulio Barrientos from Major League Anasco. |
| Received LF Amérigo Delgado from Major League Anasco. |
| Monday, February 15th , 1904 |
|---|
| Received RP Pedro Martínez from Major League Anasco. |
| Sunday, February 14th , 1904 |
|---|
| Promoted LF José Melgar to Major League Anasco. |
| Received RF Roberto Vázquez from Major League Anasco. |
| Received RP Alfie Buckfield from Major League Anasco. |
| Saturday, February 13th , 1904 |
|---|
| Received SP Felipe Cortés from Major League Anasco. |
| Received CF Hermenegildo Quintana from Major League Anasco. |
| Monday, February 8th , 1904 |
|---|
| Received RP Troilo Carrillo from Major League Anasco. |
| Saturday, February 6th , 1904 |
|---|
| Received SP Eugenio Zaragoza from Major League Anasco. |
| Saturday, January 30th , 1904 |
|---|
| Received RP Guarionex Romero from Major League Anasco. |
| Friday, January 29th , 1904 |
|---|
| Received RP Frédéric Sanchez from Major League Anasco. |
| Thursday, January 28th , 1904 |
|---|
| Received RP Guillermo Miranda from Major League Anasco. |
| Wednesday, January 27th , 1904 |
|---|
| Received RP Miguel Escobedo from Major League Anasco. |
| Tuesday, January 26th , 1904 |
|---|
| Received RP Reece Field from Major League Anasco. |
| Monday, January 25th , 1904 |
|---|
| Received RP Emerson Pye from Major League Anasco. |
| Sunday, January 24th , 1904 |
|---|
| Received RP Charlie Moran from Major League Anasco. |
| Friday, January 22nd , 1904 |
|---|
| Received SP Ezequiel Ramos from Major League Anasco. |
| Thursday, January 21st , 1904 |
|---|
| Signed General Manager Rosario Dávila. |
| Signed Manager Zacarías Robles. |
| Signed Bench Coach Admeto Luna. |
| Signed Pitching Coach José Treviño. |
| Signed Hitting Coach Sergio López. |
| Signed Scouting Director Marcos Gracia. |
| Signed Team Trainer Alberto Piñedo. |
| Signed 1B Coach Osmundo Muino. |
| Signed 3B Coach Demóstenes Delgado. |
| Received SP Eufemio Roque from Major League Anasco. |
| Received RP Ángel Olivo from Major League Anasco. |
| Received RP Ángel Martínez from Major League Anasco. |
| Received RP Hugo Suazo from Major League Anasco. |
| Received RP Zeferino Zalazar from Major League Anasco. |
| Received RP Helio González from Major League Anasco. |
| Received RP Jaime Contín from Major League Anasco. |
| Received C Bolívar Salinas from Major League Anasco. |
| Received 2B Alarico Moreno from Major League Anasco. |
| Received RP Rafael Almeida from Major League Anasco. |
| Released CL Helio González. |
| Released SP Ángel Olivo. |
| Released SP Ángel Martínez. |
