Liam O'Brien
Birthdate:
March 9, 2003 (24 y, 9 m, 14 d)Born In:
Tucson, AZ, USANationality:
American
Position:
PBats/Throws:
R/RHeight/Weight:
6'5"/197Entry:
2025 Draft
- Round: 5, Overall: 137, Team: Texas Rangers
Contract:
Minor League
ML Service Time:
NoneOSA Rating History
Loading Chart...
| Ratings Changes |
|---|
| 2027-11-02 |
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Weight decreased from 198 to 197
|
| 2027-09-13 |
|
Contact decreased from 25 to 20
|
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Contact vs R decreased from 25 to 20
|
|
Contact vs L decreased from 25 to 20
|
|
Avoid Ks decreased from 25 to 20
|
|
Avoid Ks vs R decreased from 25 to 20
|
|
Avoid Ks vs L decreased from 25 to 20
|
|
Outfield Range decreased from 35 to 30
|
|
Control vs R decreased from 40 to 35
|
|
GB% decreased from 49% to 48%
|
| 2027-07-19 |
|
Weight decreased from 199 to 198
|
| 2027-07-05 |
|
Eye increased from 25 to 30
|
|
Eye vs R increased from 25 to 30
|
|
Eye vs L increased from 25 to 30
|
|
Weight increased from 198 to 199
|
| 2027-05-31 |
|
Eye Potential decreased from 35 to 30
|
|
Eye decreased from 30 to 25
|
|
Eye vs R decreased from 30 to 25
|
|
Eye vs L decreased from 30 to 25
|
|
Movement Potential decreased from 45 to 40
|
|
Movement vs R decreased from 45 to 40
|
|
Movement vs L decreased from 40 to 35
|
|
Control decreased from 40 to 35
|
|
GB% decreased from 52% to 49%
|
|
Slider Pot decreased from 70 to 65
|
|
Weight increased from 196 to 198
|
| 2027-05-17 |
|
Stuff Potential decreased from 55 to 50
|
|
Stuff decreased from 55 to 45
|
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Stuff vs R decreased from 60 to 50
|
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Stuff vs L decreased from 50 to 45
|
|
Role changed from CL to SP
|
| 2027-05-03 |
|
Stuff Potential increased from 50 to 55
|
|
Stuff increased from 45 to 55
|
|
Stuff vs R increased from 50 to 60
|
|
Stuff vs L increased from 45 to 50
|
|
Role changed from SP to CL
|
| 2027-04-12 |
|
Power Potential decreased from 30 to 25
|
|
Control increased from 35 to 40
|
| 2026-11-12 |
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Power Potential increased from 25 to 30
|
|
Control decreased from 40 to 35
|
| 2026-10-25 |
|
Weight decreased from 197 to 196
|
| 2026-09-28 |
|
Weight decreased from 198 to 197
|
| 2026-09-07 |
|
Stuff Potential decreased from 60 to 50
|
|
Stuff decreased from 55 to 45
|
|
Stuff vs R decreased from 60 to 50
|
|
Stuff vs L decreased from 50 to 45
|
|
Movement decreased from 45 to 40
|
|
Control increased from 35 to 40
|
|
Control vs R increased from 35 to 40
|
|
GB% decreased from 54% to 52%
|
|
Role changed from RP to SP
|
| 2026-08-24 |
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Speed decreased from 25 to 20
|
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Weight increased from 197 to 198
|
| 2026-07-20 |
|
Stuff Potential increased from 50 to 60
|
|
Stuff increased from 45 to 55
|
|
Stuff vs R increased from 50 to 60
|
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Stuff vs L increased from 45 to 50
|
|
Role changed from SP to RP
|
|
Weight increased from 196 to 197
|
| 2026-05-25 |
|
Power Potential decreased from 30 to 25
|
|
Avoid Ks Potential decreased from 30 to 25
|
|
Stuff Potential decreased from 55 to 50
|
|
GB% increased from 52% to 54%
|
|
Changeup Pot decreased from 45 to 40
|
| 2026-03-13 |
|
Stuff Potential decreased from 65 to 55
|
|
Stuff decreased from 55 to 45
|
|
Stuff vs R decreased from 60 to 50
|
|
Stuff vs L decreased from 50 to 45
|
|
Role changed from RP to SP
|
| 2026-02-11 |
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Weight increased from 195 to 196
|
| 2025-12-24 |
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Weight increased from 193 to 195
|
| 2025-12-04 |
|
Eye Potential decreased from 40 to 35
|
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Stuff Potential increased from 60 to 65
|
|
Stuff vs R increased from 55 to 60
|
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GB% increased from 50% to 52%
|
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Fastball increased from 60 to 65
|
| 2025-11-14 |
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Weight increased from 191 to 193
|
| 2025-08-25 |
|
Avoid Ks Potential decreased from 35 to 30
|
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Stuff Potential decreased from 65 to 60
|
|
Stuff increased from 50 to 55
|
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Stuff vs L increased from 45 to 50
|
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Movement increased from 40 to 45
|
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Velocity increased from 91-93 mph to 92-94 mph
|
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GB% increased from 48% to 50%
|
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Changeup increased from 30 to 35
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| 2025-06-23 |
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Weight decreased from 192 to 191
|
| 2025-05-19 |
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Stuff Potential increased from 60 to 65
|
|
Stuff vs R increased from 50 to 55
|
| 2025-04-04 |
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Stuff Potential decreased from 65 to 60
|
|
Stuff vs R decreased from 55 to 50
|
| 2025-02-12 |
|
Stuff Potential increased from 60 to 65
|
|
Stuff increased from 40 to 50
|
|
Stuff vs R increased from 45 to 55
|
|
Stuff vs L increased from 40 to 45
|
|
Movement Potential increased from 40 to 45
|
|
Movement increased from 35 to 40
|
|
Movement vs R increased from 35 to 45
|
|
Movement vs L increased from 30 to 40
|
|
Control increased from 30 to 35
|
|
Control vs R increased from 30 to 35
|
|
Control vs L increased from 30 to 35
|
|
GB% decreased from 49% to 48%
|
|
Fastball Pot increased from 60 to 65
|
|
Fastball increased from 50 to 60
|
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Slider increased from 55 to 65
|
| 2024-11-14 |
|
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
|
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Stuff vs L increased from 35 to 40
|
| 2024-08-19 |
|
Weight decreased from 193 to 192
|
| 2024-07-01 |
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Weight increased from 192 to 193
|
| 2024-05-27 |
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Weight decreased from 193 to 192
|
| 2024-04-01 |
|
Stuff vs L decreased from 40 to 35
|
| 2024-03-08 |
|
Avoid Ks Potential increased from 30 to 35
|
|
Avoid Ks increased from 25 to 30
|
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Avoid Ks vs R increased from 25 to 30
|
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Avoid Ks vs L increased from 25 to 30
|
|
Outfield Arm increased from 35 to 40
|
|
Stuff Potential increased from 55 to 60
|
|
Stuff increased from 35 to 40
|
|
Stuff vs R increased from 35 to 45
|
|
Stuff vs L increased from 35 to 40
|
|
Movement Potential increased from 35 to 40
|
|
Movement increased from 25 to 35
|
|
Movement vs R increased from 25 to 35
|
|
Movement vs L increased from 25 to 30
|
|
Control Potential increased from 35 to 40
|
|
Control increased from 25 to 30
|
|
Control vs R increased from 25 to 30
|
|
Control vs L increased from 25 to 30
|
|
Velocity increased from 90-92 mph to 91-93 mph
|
|
GB% increased from 47% to 49%
|
|
Fastball increased from 45 to 50
|
|
Slider Pot increased from 65 to 70
|
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Slider increased from 45 to 55
|
|
Changeup Pot increased from 40 to 45
|
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Changeup increased from 25 to 30
|
| 2023-11-11 |
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Stuff vs L increased from 30 to 35
|
| 2023-03-31 |
|
Stuff vs R decreased from 40 to 35
|
|
Stuff vs L decreased from 35 to 30
|
|
Weight decreased from 194 to 193
|
| 2023-03-16 |
|
Stuff Potential decreased from 60 to 55
|
| 2023-03-06 |
|
Slider Pot decreased from 70 to 65
|
| 2023-03-05 |
|
Avoid Ks Potential decreased from 35 to 30
|
|
Outfield Arm decreased from 40 to 35
|