Jacob Shafer
Seattle Mariners (ML)
Jacob Shafer
Birthdate:
April 30, 2002 (27 y, 11 m, 2 d)
Born In:
High Point, NC, USA
Nationality:
American
Position:
P
Bats/Throws:
R/R
Height/Weight:
6'7"/213
Entry:
2023 Draft - Round: 20, Overall: 589, Team: Seattle Mariners
Contract:
$700k / 1 year
ML Service Time:
2 years, 61 days
OSA Rating History
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Ratings Changes
2030-04-01
Control decreased from 60 to 55
Control vs L decreased from 60 to 55
2030-03-08
Hold increased from 40 to 45
2029-12-09
Weight decreased from 214 to 213
2029-11-02
Control increased from 55 to 60
Control vs R increased from 55 to 60
Control vs L increased from 55 to 60
Local Popularity increased from Unknown to Fair
National Popularity increased from Unknown to Insignificant
2029-10-23
Weight increased from 213 to 214
2029-09-25
GB% decreased from 49% to 46%
2029-05-22
Hold decreased from 45 to 40
2029-04-07
Contact Potential decreased from 25 to 20
Contact decreased from 25 to 20
Contact vs R decreased from 25 to 20
Contact vs L decreased from 25 to 20
Eye decreased from 30 to 25
Eye vs R decreased from 30 to 25
Eye vs L decreased from 30 to 25
Avoid Ks Potential decreased from 30 to 25
Avoid Ks decreased from 30 to 25
Avoid Ks vs R decreased from 30 to 25
Avoid Ks vs L decreased from 30 to 25
Movement Potential decreased from 60 to 55
Movement decreased from 60 to 55
GB% decreased from 51% to 49%
2029-03-19
Weight decreased from 214 to 213
2029-03-08
Weight decreased from 215 to 214
2029-02-26
Hold increased from 40 to 45
2028-11-02
Gap Potential decreased from 25 to 20
Gap decreased from 25 to 20
Gap vs R decreased from 25 to 20
Gap vs L decreased from 25 to 20
Power Potential decreased from 25 to 20
Power decreased from 25 to 20
Power vs R decreased from 25 to 20
Power vs L decreased from 25 to 20
Eye Potential increased from 25 to 30
Eye increased from 25 to 30
Eye vs R increased from 25 to 30
Eye vs L increased from 25 to 30
Avoid Ks Potential increased from 25 to 30
Avoid Ks increased from 25 to 30
Avoid Ks vs R increased from 25 to 30
Avoid Ks vs L increased from 25 to 30
Speed decreased from 25 to 0
Stealing decreased from 30 to 0
Baserunning decreased from 30 to 0
Infield Range increased from 30 to 35
Infield Error increased from 40 to 45
Outfield Range increased from 20 to 25
Outfield Arm decreased from 25 to 20
Control decreased from 60 to 55
Control vs R decreased from 60 to 55
GB% decreased from 53% to 51%
Stamina decreased from 55 to 50
Slider Pot decreased from 60 to 55
Slider decreased from 60 to 55
Changeup Pot increased from 45 to 55
Changeup increased from 45 to 55
2028-11-01
Control vs L decreased from 60 to 55
2028-07-23
Movement increased from 55 to 60
Control vs L increased from 55 to 60
2028-06-22
Control increased from 55 to 60
2028-04-18
Weight decreased from 216 to 215
2028-04-13
Eye Potential decreased from 30 to 25
Sac Bunt decreased from 50 to 45
Movement decreased from 60 to 55
GB% decreased from 54% to 53%
Fastball Pot decreased from 60 to 55
Fastball decreased from 60 to 55
2028-04-08
Weight decreased from 217 to 216
2028-01-11
Weight decreased from 218 to 217
2027-12-05
Weight decreased from 219 to 218
2027-11-05
Eye decreased from 30 to 25
Eye vs R decreased from 30 to 25
Eye vs L decreased from 30 to 25
Stuff vs R decreased from 50 to 45
2027-10-15
Weight decreased from 220 to 219
2027-09-03
Avoid Ks Potential decreased from 30 to 25
Avoid Ks decreased from 30 to 25
Avoid Ks vs R decreased from 30 to 25
Avoid Ks vs L decreased from 30 to 25
Sac Bunt increased from 45 to 50
Control vs R increased from 55 to 60
GB% increased from 53% to 54%
Weight decreased from 221 to 220
2027-07-15
Weight decreased from 222 to 221
2027-05-30
Avoid Ks Potential increased from 25 to 30
Avoid Ks increased from 25 to 30
Avoid Ks vs R increased from 25 to 30
Avoid Ks vs L increased from 25 to 30
Stuff vs R increased from 45 to 50
Slider increased from 55 to 60
2027-04-30
P defense increased from 55 to 60
2027-04-20
Stuff Potential decreased from 50 to 45
Stuff decreased from 50 to 45
Stuff vs R decreased from 50 to 45
Role changed from RP to SP
2027-03-17
Stuff Potential increased from 45 to 50
Stuff increased from 45 to 50
Stuff vs R increased from 45 to 50
Role changed from SP to RP
2027-03-01
Movement increased from 55 to 60
GB% increased from 52% to 53%
Weight increased from 221 to 222
2027-01-29
Weight decreased from 222 to 221
2027-01-01
Sac Bunt decreased from 50 to 45
Movement Potential increased from 50 to 60
Movement increased from 50 to 55
Movement vs R increased from 55 to 60
Movement vs L increased from 50 to 55
Control Potential increased from 55 to 60
Control increased from 50 to 55
Control vs L increased from 50 to 55
Slider Pot increased from 55 to 60
Weight decreased from 223 to 222
2026-07-01
Eye increased from 25 to 30
Eye vs R increased from 25 to 30
Eye vs L increased from 25 to 30
Avoid Ks Potential decreased from 30 to 25
Sac Bunt increased from 45 to 50
Stuff vs L increased from 40 to 45
Movement Potential increased from 40 to 50
Movement increased from 40 to 50
Movement vs R increased from 45 to 55
Movement vs L increased from 40 to 50
Control Potential increased from 50 to 55
Control vs R increased from 50 to 55
GB% increased from 51% to 52%
Slider Pot increased from 50 to 55
Slider increased from 50 to 55
Weight decreased from 226 to 223
2026-01-01
Avoid Ks decreased from 30 to 25
Avoid Ks vs R decreased from 30 to 25
Avoid Ks vs L decreased from 30 to 25
Sac Bunt decreased from 50 to 45
Bunt for Hit decreased from 25 to 20
Infield Range decreased from 35 to 30
Outfield Error decreased from 25 to 20
Stuff Potential increased from 40 to 45
Stuff increased from 40 to 45
Stuff vs R increased from 40 to 45
Movement Potential decreased from 45 to 40
Movement decreased from 45 to 40
Movement vs L decreased from 45 to 40
Control increased from 45 to 50
Control vs R increased from 45 to 50
Control vs L increased from 45 to 50
Velocity increased from 91-93 mph to 92-94 mph
GB% increased from 49% to 51%
Fastball Pot increased from 50 to 60
Fastball increased from 50 to 60
Slider Pot decreased from 55 to 50
Weight increased from 224 to 226
2025-07-01
Eye decreased from 30 to 25
Eye vs R decreased from 30 to 25
Eye vs L decreased from 30 to 25
GB% increased from 47% to 49%
Slider Pot increased from 50 to 55
Slider increased from 45 to 50
2025-01-01
Stuff vs L increased from 35 to 40
Curveball increased from 45 to 50
Changeup increased from 40 to 45
Weight decreased from 225 to 224
2024-07-01
Contact Potential decreased from 30 to 25
Power Potential decreased from 30 to 25
Eye Potential decreased from 35 to 30
Eye increased from 25 to 30
Eye vs R increased from 25 to 30
Eye vs L increased from 25 to 30
Avoid Ks Potential decreased from 35 to 30
Bunt for Hit increased from 20 to 25
Turn Double Play decreased from 40 to 35
Stuff Potential decreased from 45 to 40
Stuff increased from 35 to 40
Stuff vs R increased from 35 to 40
Control increased from 35 to 45
Control vs R increased from 35 to 45
Control vs L increased from 35 to 45
Velocity increased from 90-92 mph to 91-93 mph
GB% increased from 46% to 47%
Fastball increased from 45 to 50
Curveball Pot decreased from 55 to 50
Slider Pot decreased from 55 to 50
Weight decreased from 226 to 225
2024-01-01
P defense increased from 50 to 55
Movement increased from 35 to 45
Movement vs R increased from 40 to 45
Movement vs L increased from 35 to 45
Control increased from 30 to 35
Control vs R increased from 30 to 35
Control vs L increased from 30 to 35
Changeup increased from 35 to 40
2023-07-01
Power Potential decreased from 35 to 30
Sac Bunt decreased from 55 to 50
Stuff vs L increased from 30 to 35
Movement vs R increased from 35 to 40
Movement vs L increased from 30 to 35
Hold increased from 35 to 40
Curveball increased from 40 to 45
Slider Pot decreased from 60 to 55
Slider increased from 40 to 45
Changeup increased from 30 to 35
Weight decreased from 227 to 226
2023-01-01
Avoid Ks Potential increased from 30 to 35
Avoid Ks increased from 25 to 30
Avoid Ks vs R increased from 25 to 30
Avoid Ks vs L increased from 25 to 30
Movement increased from 30 to 35
Movement vs R increased from 30 to 35
Weight decreased from 229 to 227