P Jeff Kosowski #34
San Francisco Giants MLB
Age: 24 | Bats: L | Throws: R | Morale: Good
03/30/2026
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P JEFF KOSOWSKI #34 - AGE: 24 - BATS: L - THROWS: R - MORALE: GOOD
G GS Rec SV ERA IP HA HR BB K WHIP WAR
0 0 0-0 0 0.00 0.0 0 0 0 0 0.00 0.0
PITCHING RATINGS (OSA)
Overall Pot. Overall Vs Left Vs Right Pot.
Stuff 45 50 45 55
Movement 45 50 45 50
Control 40 40 40 40
PITCHING RATINGS
Pitch Cur. Pot.
Curveball 45 55
Changeup 45 50
Splitter 55 80
Cutter 50 55
 
OTHER PITCHING RATINGS
Velocity 92-94 Mph
Stamina 60
Suggested Role Starter
Type Flyball Pitcher
Hold Runners 60
Defense 60
RUN/BUNT RATINGS
Running Speed: 25
Stealing Ability: 20
Baserunning Inst.: 20
Sacrifice Bunt: 80
Bunt for Hit: 25
   
GAME LOG, LAST 10 GAMES
Date Vs. Result Start IP H R ER BB K Dec
03/17/2026 @ SD Loss, 6-7 0.1 3 1 1 0 1 Loss
03/13/2026 PIT Win, 1-0 4.0 3 0 0 2 3
03/08/2026 ARI Win, 3-2 1.0 0 0 0 1 0 Win
03/05/2026 STL Win, 9-8 1.0 3 2 2 0 0
03/02/2026 @ LAD Win, 6-5 1.0 3 1 1 0 2 Save
02/28/2026 SD Loss, 3-4 1.0 0 0 0 0 0
02/26/2026 COL Loss, 4-11 4.0 2 1 1 0 3
02/22/2026 @ LKW Loss, 2-3 0.0 1 1 1 0 0 Loss
02/21/2026 MIL Win, 5-3 1.0 1 1 1 0 0
02/19/2026 CHC Loss, 2-8 1.2 6 4 4 1 2
PERSONALITY
Birthday:06/08/2001
Born in:Terrell, TX
Nationality:American
Height:6' 4"
Weight:215 lbs
Local Popularity:Unknown
National Pop.:Unknown
STATUS
Contract:Major League Contract
Salary:$740,000
Signed Through:2026 Season
Major Service:3 Years, 32 Days
Service This Yr:6 Days
40-Man Service:4 Years, 79 Days
Pro Service:6 Years
Arbitration Eligibility:Arbitration eligible in offseason
Option Years:3 option years left
Contract Extension: -
Drafted:-
CAREER PITCHING STATS
Year/Team/League Age G GS W L SV ERA IP HA R ER HR BB K CG SHO WHIP BABIP FIP WAR ERA+
CAREER MINOR LEAGUE PITCHING STATS
Year/Team/League Age G GS W L SV ERA IP HA R ER HR BB K CG SHO WHIP BABIP FIP WAR ERA+
2025 Hudson Valley - A 23 6 6 3 1 0 2.65 37.1 38 12 11 5 10 31 0 0 1.29 .295 4.28 0.5 159
2025 Somerset - AA 23 5 5 3 0 0 1.49 36.1 35 6 6 4 7 35 0 0 1.16 .316 3.15 1.2 324
2025 Scranton WB - AAA 23 18 18 7 5 0 3.29 109.1 106 45 40 12 31 86 0 0 1.25 .288 3.75 2.0 125
Total IL 18 18 7 5 0 3.29 109.1 106 45 40 12 31 86 0 0 1.25 .288 3.75 125.2
Total EL 5 5 3 0 0 1.49 36.1 35 6 6 4 7 35 0 0 1.16 .316 3.15 323.9
Total SAL 6 6 3 1 0 2.65 37.1 38 12 11 5 10 31 0 0 1.29 .295 4.28 159.4
CAREER FIELDING STATS
Year/Team/League POS G GS PO A DP TC E PCT INN RNG ZR EFF PB RSTA RTO RTO%
PLAYER HISTORY
02/19/2025 Signed a 1-year minor league contract with the New York Yankees organization.
12/15/2025 Added to the secondary (40-man) roster for the New York Yankees.
01/01/2026 OSA scouting updated ratings (potential): Stuff: 45 (55); Movement: 45 (50); Control: 40 (40).
02/06/2026 Designated for assignment and placed on waivers by the New York Yankees.
02/09/2026 Was claimed off waivers by San Francisco while with New York.
Thursday, January 15th , 2026 - OOTP Baseball 26.8 Build 82