Jeff Chapman
Albuquerque Isotopes (AAA)
Jeff Chapman
Birthdate:
Nov. 18, 2000 (24 y, 8 m, 17 d)
Born In:
Plano, TX, USA
Nationality:
American
Position:
P
Bats/Throws:
L/L
Height/Weight:
6'0"/193
Entry:
2019 Draft - Round: 6, Overall: 163, Team: Colorado Rockies
Contract:
Minor League
ML Service Time:
None

2025 Season Pitching Summary

Team G GS IP W-L SV SD MD BB K ERA FIP FIP- xFIP WAR
ABQ - PCL
6 0 10.1 1-0 0 4 0 3 11 0.871 1.560 35 2.528 0.50
NBR - EL
16 16 99.1 9-3 0 0 0 36 74 1.812 3.341 77 3.995 2.67
Current Status
MLB Service Time None
40-man Service Time None
Time as Pro 6 years
Roster Status Minor Leagues
Injury Status None
Personality
Leadership Normal
Loyalty High
Desire for Win High
Greed High
Intelligence Normal
Work Ethic Normal
Popularity
National Unknown
Local Insignficant
Current Contract
Minor League Contract
Batting Con Gap Pow Eye K's
Current 7 7 2 2 7
vs R 7 8 2 2 7
vs L 7 6 2 2 6
Potential 8 7 2 2 7
Fielding C IF OF
Range 2 1
Error 5 7
Arm 1 13 2
Turn DP 1
C Ability 1
Position
Pitcher 7
Run/Bunt
Speed 1
Stealing 1
Running 1
Sac Bunt 14
Bunt for Hit 1
Pitching Stuff Movement Control
Current 16 6 12
vs R 16 6 12
vs L 18 7 13
Potential 18 6 12
Pitch Ratings Cur Pot
Fastball 17 17
Curveball 4 17
Slider 16 17
Other Pitching
Velocity 95-97 mph
GB % 49%
Stamina 15
Hold 20
OSA Rating History
Ratings Changes
2025-08-04
Stuff decreased from 17 to 16
Weight increased from 192 to 193
2025-07-28
Stuff Potential increased from 15 to 18
Stuff increased from 13 to 17
Stuff vs R increased from 12 to 16
Stuff vs L increased from 14 to 18
Position changed from SP to RP
Role changed from SP to RP
2025-06-09
Control Potential decreased from 13 to 12
2025-05-19
Contact vs R decreased from 8 to 7
2025-05-12
Eye vs R decreased from 3 to 2
Slider increased from 15 to 16
2025-05-05
Eye vs R increased from 2 to 3
2025-04-28
Stuff Potential decreased from 18 to 15
Stuff decreased from 16 to 13
Stuff vs R decreased from 16 to 12
Stuff vs L decreased from 18 to 14
Control Potential decreased from 14 to 13
Position changed from RP to SP
Role changed from RP to SP
Weight decreased from 193 to 192
2025-04-14
Stuff Potential increased from 15 to 18
Stuff increased from 13 to 16
Stuff vs R increased from 12 to 16
Stuff vs L increased from 14 to 18
Position changed from SP to RP
Role changed from SP to RP
2025-04-05
Contact decreased from 8 to 7
Weight increased from 192 to 193
2025-03-18
Contact increased from 7 to 8
Control Potential decreased from 15 to 14
2025-02-23
Contact decreased from 8 to 7
Avoid Ks Potential decreased from 8 to 7
2025-02-08
Gap Potential decreased from 8 to 7
Gap decreased from 8 to 7
Gap vs L decreased from 7 to 6
Avoid Ks vs L decreased from 7 to 6
Infield Range decreased from 3 to 2
P defense decreased from 8 to 7
Stuff Potential decreased from 18 to 15
Stuff decreased from 17 to 13
Stuff vs R decreased from 16 to 12
Stuff vs L decreased from 19 to 14
Movement Potential decreased from 8 to 6
Movement decreased from 8 to 6
Movement vs R decreased from 8 to 6
Movement vs L decreased from 9 to 7
Control Potential decreased from 16 to 15
GB% increased from 46% to 49%
Position changed from RP to SP
Role changed from RP to SP
Weight increased from 189 to 192
2024-10-07
Weight increased from 188 to 189
2024-08-26
Movement Potential decreased from 9 to 8
Movement decreased from 9 to 8
GB% decreased from 48% to 46%
2024-08-05
Position changed from CL to RP
Role changed from CL to RP
2024-07-31
Weight increased from 187 to 188
2024-07-22
Movement Potential increased from 8 to 9
Movement increased from 8 to 9
GB% increased from 47% to 48%
Stamina decreased from 16 to 15
Weight decreased from 188 to 187
2024-07-15
Control increased from 11 to 12
Control vs R increased from 11 to 12
Control vs L increased from 12 to 13
2024-06-24
Movement Potential decreased from 9 to 8
Movement decreased from 9 to 8
Movement vs R decreased from 9 to 8
GB% decreased from 49% to 47%
Position changed from RP to CL
Role changed from RP to CL
2024-05-27
Control increased from 10 to 11
Control vs R increased from 10 to 11
Control vs L increased from 11 to 12
2024-05-06
Position changed from CL to RP
Role changed from CL to RP
2024-04-22
Avoid Ks vs L increased from 6 to 7
Position changed from RP to CL
Role changed from RP to CL
2024-04-07
Stuff Potential increased from 15 to 18
Stuff increased from 13 to 17
Stuff vs R increased from 12 to 16
Stuff vs L increased from 14 to 19
Position changed from SP to RP
Role changed from SP to RP
2024-02-03
Weight increased from 187 to 188
2023-11-27
Stamina increased from 15 to 16
2023-11-09
Control vs R increased from 9 to 10
Control vs L increased from 10 to 11
Stamina decreased from 16 to 15
2023-09-11
Stuff increased from 12 to 13
Control increased from 9 to 10
GB% decreased from 50% to 49%
Stamina increased from 15 to 16
Slider increased from 14 to 15
Weight decreased from 188 to 187
2023-07-17
Avoid Ks increased from 6 to 7
Avoid Ks vs R increased from 6 to 7
GB% increased from 49% to 50%
Weight decreased from 189 to 188
2023-05-29
Contact increased from 7 to 8
Avoid Ks vs L increased from 5 to 6
P defense decreased from 9 to 8
Stuff vs L increased from 13 to 14
Slider increased from 13 to 14
Weight increased from 187 to 189
2023-02-26
Outfield Arm decreased from 3 to 2
Weight increased from 184 to 187
Local Popularity increased from Unknown to Insignficant
2022-10-14
Power increased from 1 to 2
Power vs R increased from 1 to 2
Power vs L increased from 1 to 2
Stuff vs R increased from 11 to 12
Movement vs R increased from 8 to 9
Stamina decreased from 16 to 15
Slider increased from 12 to 13
Weight decreased from 185 to 184
2022-07-31
Eye vs L increased from 1 to 2
Outfield Arm increased from 2 to 3
Movement increased from 8 to 9
GB% decreased from 50% to 49%
2022-05-29
Contact vs R increased from 7 to 8
Contact vs L increased from 6 to 7
Eye increased from 1 to 2
Eye vs R increased from 1 to 2
Avoid Ks increased from 4 to 6
Avoid Ks vs R increased from 4 to 6
Avoid Ks vs L increased from 4 to 5
Speed decreased from 2 to 1
Infield Error increased from 4 to 5
Infield Arm increased from 12 to 13
Outfield Range decreased from 2 to 1
Outfield Arm decreased from 3 to 2
Stuff Potential increased from 14 to 15
Stuff increased from 8 to 12
Stuff vs R increased from 8 to 11
Stuff vs L increased from 9 to 13
Movement vs L increased from 8 to 9
Control increased from 7 to 9
Control vs R increased from 7 to 9
Control vs L increased from 7 to 10
Velocity increased from 93-95 mph to 95-97 mph
Stamina increased from 15 to 16
Hold increased from 19 to 20
Fastball Pot increased from 16 to 17
Fastball increased from 13 to 17
Curveball Pot increased from 16 to 17
Curveball increased from 3 to 4
Slider Pot increased from 16 to 17
Slider increased from 8 to 12
Local Popularity decreased from Insignficant to Unknown
2021-04-10
Infield Range decreased from 4 to 3
Stuff increased from 7 to 8
Stuff vs R increased from 7 to 8
Stuff vs L increased from 8 to 9
GB% increased from 49% to 50%
Fastball increased from 12 to 13
Slider increased from 7 to 8
Weight increased from 183 to 185

Career Minor League Stats

Team Year Age GS G IP W-L SV K BB K% BB% HR% LOB% GB% BABIP ERA FIP FIP- xFIP E-F WAR
ABQ - PCL
2025 24 0 6 10.1 1-0 0 11 3 29.73% 8.11% 0.00% 87.50% 61.11% 0.217 0.871 1.560 35 2.528 -0.69 0.50
NBR - EL
2025 24 16 16 99.1 9-3 0 74 36 18.27% 8.89% 0.74% 80.65% 53.47% 0.272 1.812 3.341 77 3.995 -1.53 2.67
ABQ - PCL
2024 23 1 59 53.0 3-9 7 53 31 22.27% 13.03% 2.10% 69.74% 47.00% 0.317 4.245 4.343 90 4.731 -0.10 0.70
NBR - EL
2023 22 29 29 152.2 5-9 0 140 91 20.59% 13.38% 2.21% 70.18% 47.99% 0.297 5.011 4.996 104 4.833 0.01 1.70
NBR - EL
2022 21 26 26 133.0 7-9 0 88 73 14.97% 12.42% 2.21% 74.42% 45.99% 0.289 4.534 5.229 114 5.226 -0.70 0.84
Asheville - SAL
ASH - SAL
2021 20 28 28 123.1 5-14 0 94 72 15.82% 12.12% 2.36% 59.53% 51.79% 0.374 7.662 5.717 134 5.106 1.95 -0.34
Total - AAA
AAA
1 65 63.1 4-9 7 64 34 23.27% 12.36% 1.82% 71.43% 49.15% 0.304 3.695 3.889 81 4.371 -0.19 1.21
Total - AA
AA
71 71 385.0 21-21 0 302 200 18.05% 11.95% 1.85% 74.06% 48.67% 0.288 4.021 4.650 100 4.753 -0.63 5.22
Total - A
A
28 28 123.1 5-14 0 94 72 15.82% 12.12% 2.36% 59.53% 51.79% 0.374 7.662 5.717 134 5.106 1.95 -0.34

Career Minor League Stats

Team Year Age G PA AB H 2B 3B HR RBI R BB K SB CS AVG OBP OPS BABIP wOBA WAR
None - None
None - None
2019 18 23 117 114 48 12 0 0 26 34 2 7 5 2 0.421 0.427 0.954 0.4444 0.417 1.27
Total - ??
??
23 117 114 48 12 0 0 26 34 2 7 5 2 0.421 0.427 0.954 0.4444 0.417 1.27

Career Minor League Fielding Stats

Team Year Pos G IP PO A E Fld % RF Eff ZR
ABQ - PCL
2025 P 6 10.1 0 1 0 1.000 0.871 1.046 -0.18
NBR - EL
2025 P 16 99.1 4 15 3 0.864 1.722 0.893 -2.68
Total P 22 109.2 4 16 3 -2.86

Pacific Coast League Pitching Log

Date Opp Score GS IP H R ER HR BB K IBB HBP GB FB BF PI GSC WPA ERA FIP
July 30, 2025
Jul 30
REN 3 - 8 0.2 0 0 0 0 0 0 0 0 1 1 2 7 - 0.00
July 28, 2025
Jul 28
REN 11 - 3 3.0 4 0 0 0 0 6 0 0 2 0 12 54 - 0.02
July 26, 2025
Jul 26
@NAS 7 - 6 2.0 0 0 0 0 1 2 0 0 2 1 6 17 - 0.39
April 26, 2025
Apr 26
@NAS 5 - 4 2.0 1 1 1 0 1 0 0 0 3 3 8 25 - 0.10
April 25, 2025
Apr 25
@IOW 2 - 5 2.0 0 0 0 0 0 1 0 0 3 2 6 19 - 0.19
April 16, 2025
Apr 16
IOW 5 - 3 0.2 0 0 0 0 1 2 1 0 0 0 3 12 - 0.15

Eastern League Pitching Log

Date Opp Score GS IP H R ER HR BB K IBB HBP GB FB BF PI GSC WPA ERA FIP
July 20, 2025
Jul 20
@BIN 2 - 5 6.1 6 5 4 0 2 1 0 0 9 7 26 98 48 -0.18
July 13, 2025
Jul 13
POR 5 - 7 5.1 2 2 2 0 4 7 0 1 5 4 23 95 61 0.00
July 8, 2025
Jul 8
BIN 9 - 0 6.0 3 0 0 0 3 7 0 0 4 5 23 97 71 0.25
July 3, 2025
Jul 3
@POR 2 - 3 6.1 4 2 2 0 4 4 0 0 5 9 26 95 60 0.04
June 28, 2025
Jun 28
ERI 3 - 0 7.2 4 0 0 0 2 3 0 1 11 7 28 104 77 0.38
June 22, 2025
Jun 22
@ALT 3 - 1 6.1 4 1 1 0 4 4 0 1 7 5 25 96 63 0.30
June 17, 2025
Jun 17
REA 6 - 1 7.1 6 1 1 0 2 4 0 0 9 7 28 98 69 0.24
June 11, 2025
Jun 11
@HAR 4 - 6 6.0 7 2 2 0 1 3 0 0 8 5 24 98 57 0.06
June 6, 2025
Jun 6
POR 2 - 4 4.2 7 4 0 0 2 4 0 0 5 4 24 97 42 -0.22
June 1, 2025
Jun 1
@POR 2 - 8 5.0 5 3 3 0 3 2 0 1 6 6 23 97 47 -0.16
May 27, 2025
May 27
BOW 8 - 0 7.2 4 0 0 0 3 6 0 1 8 8 30 97 78 0.22
May 21, 2025
May 21
AKR 6 - 2 7.0 5 2 0 0 2 5 0 0 8 6 28 98 67 0.15
May 16, 2025
May 16
NHA 11 - 0 7.2 4 0 0 0 0 8 0 1 9 5 27 96 86 0.26
May 11, 2025
May 11
NHA 15 - 10 5.1 10 4 4 2 0 10 0 0 3 3 26 96 38 -0.20
May 6, 2025
May 6
@HAR 4 - 2 5.1 3 1 1 1 2 4 0 0 2 10 22 97 57 0.12
May 1, 2025
May 1
HAR 3 - 0 5.1 6 0 0 0 2 2 0 0 9 3 22 95 58 0.24
Player Awards
Award Year / Date Team
All-Star 2025 New Britain (EL)
Pitcher of the Month Jun 2025 New Britain (EL)