P Jeff Kosowski #34
San Francisco Giants MLB
Age: 25 | Bats: L | Throws: R | Morale: Good
10/06/2026
BNN Index | MLB | SCORES | STANDINGS | STATS | TEAMS | PLAYERS | TRANSACTIONS | HISTORY
P JEFF KOSOWSKI #34 - AGE: 25 - BATS: L - THROWS: R - MORALE: GOOD
G GS Rec SV ERA IP HA HR BB K WHIP WAR
26 0 4-3 0 5.97 28.2 33 6 13 20 1.60 -0.5
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 50
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 65
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
10/04/2026 @ SD Loss, 1-6 1.0 2 2 1 1 0
10/02/2026 @ SD Win, 8-6 0.2 2 3 3 1 0
09/26/2026 TEX Loss, 7-9 0.2 2 1 0 1 0
09/16/2026 @ COL Win, 5-4 1.1 1 0 0 0 1
09/09/2026 SD Loss, 6-8 1.0 1 0 0 0 2
09/03/2026 @ ATH Loss, 3-6 2.0 1 0 0 0 0
08/27/2026 @ LVA Loss, 5-6 X 5.0 5 3 3 3 4
08/22/2026 SUG Win, 6-3 1.0 0 0 0 0 0 Save
08/19/2026 @ PIT Loss, 4-9 2.0 4 3 3 1 1
08/15/2026 OKL Loss, 2-3 X 8.0 4 0 0 1 6
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, 139 Days
Service This Yr:113 Days
40-Man Service:5 Years, 73 Days
Pro Service:6 Years
Arbitration Eligibility:Arbitration eligible in offseason
Option Years:2 option years left
Contract Extension: -
Drafted:-
MAJOR LEAGUE BASEBALL 2026 PITCHING STATS
Pitching G GS W L SV ERA IP HA R ER HR BB K CG CG% SHO QS QS%
Overall 26 0 4 3 0 5.97 28.2 33 21 19 6 13 20 0 0.0 0 0 0.0
Pitching SVO BS SV% RA GF BR/9 H/9 K/9 BB/9 FIP WHIP FIP- WAR BABIP        
Overall 4 4 0.0 26 11 14.44 10.36 6.28 4.08 5.74 1.60 136 -0.5 .293        
Pitching AB H 2B 3B HR R BB K SF SH HP AVG OBP SLG OPS      
vs. LHB 33 7 2 0 1 6 5 6 0 0 0 .212 .316 .364 .679      
vs. RHB 82 26 3 0 5 15 8 14 3 1 0 .317 .366 .537 .902      
MAJOR LEAGUE BASEBALL 2026 PITCHING SPLITS
Split G GS W L SV ERA IP HA R ER HR BB K  
Last Week 2 0 0 0 0 21.60 1.2 4 5 4 1 2 0  
April 8 0 3 1 0 3.00 9.0 8 3 3 2 2 7  
May 9 0 1 1 0 7.88 8.0 8 7 7 2 6 8  
June 2 0 0 1 0 6.00 3.0 4 2 2 1 1 1  
August 1 0 0 0 0 13.50 2.0 4 3 3 0 1 1  
September 4 0 0 0 0 0.00 5.0 5 1 0 0 1 3  
October 2 0 0 0 0 21.60 1.2 4 5 4 1 2 0  
Spring Training 10 0 1 2 1 6.60 15.0 22 11 11 4 4 11  
Career 26 0 4 3 0 5.97 28.2 33 21 19 6 13 20  
Home 12 0 3 0 0 0.67 13.1 12 2 1 1 5 13  
Road 14 0 1 3 0 10.57 15.1 21 19 18 5 8 7  
Grass 24 0 4 3 0 6.58 26.0 32 21 19 6 12 19  
Turf 2 0 0 0 0 0.00 2.2 1 0 0 0 1 1  
Day 12 0 2 2 0 5.65 14.1 18 10 9 4 5 10  
Night 14 0 2 1 0 6.28 14.1 15 11 10 2 8 10  
As Reliever / Substitution 26 0 4 3 0 5.97 28.2 33 21 19 6 13 20  
PACIFIC COAST LEAGUE 2026 PITCHING STATS
Pitching G GS W L SV ERA IP HA R ER HR BB K CG CG% SHO QS QS%
Overall 14 13 5 2 1 2.40 82.2 83 25 22 6 24 53 0 0.0 0 9 69.2
Pitching SVO BS SV% RA GF BR/9 H/9 K/9 BB/9 FIP WHIP FIP- WAR BABIP        
Overall 1 0 100.0 1 1 11.76 9.04 5.77 2.61 3.68 1.29 88 1.6 .297        
Pitching AB H 2B 3B HR R BB K SF SH HP AVG OBP SLG OPS      
vs. LHB 112 29 3 1 0 7 11 26 0 3 0 .259 .325 .304 .629      
vs. RHB 205 54 8 0 6 18 13 27 1 3 1 .263 .309 .390 .699      
PACIFIC COAST LEAGUE 2026 PITCHING SPLITS
Split G GS W L SV ERA IP HA R ER HR BB K  
June 3 3 2 0 0 1.74 20.2 21 4 4 1 4 8  
July 6 6 1 2 0 2.78 35.2 41 14 11 1 8 26  
August 5 4 2 0 1 2.39 26.1 21 7 7 4 12 19  
Career 14 13 5 2 1 2.40 82.2 83 25 22 6 24 53  
Home 6 5 1 2 1 2.25 32.0 30 11 8 1 9 24  
Road 8 8 4 0 0 2.49 50.2 53 14 14 5 15 29  
Grass 14 13 5 2 1 2.40 82.2 83 25 22 6 24 53  
Night 14 13 5 2 1 2.40 82.2 83 25 22 6 24 53  
As Starter 13 13 5 2 0 2.42 81.2 83 25 22 6 24 53  
As Reliever / Substitution 1 0 0 0 1 0.00 1.0 0 0 0 0 0 0  
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+
2026 San Francisco - MLB 24 26 0 4 3 0 5.97 28.2 33 21 19 6 13 20 0 0 1.60 .293 5.74 -0.5 71
Total MLB 26 0 4 3 0 5.97 28.2 33 21 19 6 13 20 0 0 1.60 .293 5.74 -0.5 71
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
2026 Sacramento - AAA 24 14 13 5 2 1 2.40 82.2 83 25 22 6 24 53 0 0 1.29 .297 3.68 1.6 175
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 PCL 14 13 5 2 1 2.40 82.2 83 25 22 6 24 53 0 0 1.29 .297 3.68 175.0
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%
2026 San Francisco - MLB P 26 0 2 2 0 4 0 1.000 28.2 1.26 +0.3 .996
2026 Sacramento - AAA P 14 13 7 9 1 16 0 1.000 82.2 1.74 +1.0 1.000
TOTAL P 40 13 9 11 1 20 0 1.000 111.1 1.62 +1.3 .999
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.
Sunday, June 21st , 2026 - OOTP Baseball 26.8 Build 82