P Jeff Kosowski #34
Sacramento River Cats (SF) PCL
Age: 25 | Bats: L | Throws: R | Morale: Good
07/19/2026
BNN Index | PCL | 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
6 6 3-2 0 2.72 36.1 39 2 10 18 1.35 0.7
PITCHING RATINGS (OSA)
Overall Pot. Overall Vs Left Vs Right Pot.
Stuff 45 45 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
07/14/2026 SL Loss, 4-5 X 6.2 5 4 2 2 6 Loss
07/09/2026 @ REN Win, 2-1 X 6.0 7 1 1 1 3 Win
07/04/2026 LVA Loss, 8-9 X 3.0 6 5 4 3 1 Loss
06/24/2026 @ TAC Win, 7-1 X 8.0 9 1 1 0 2 Win
06/18/2026 @ SUG Loss, 2-3 X 7.0 6 1 1 1 1
06/12/2026 LVA Win, 5-2 X 5.2 6 2 2 3 5 Win
06/06/2026 @ RHR Loss, 3-9 0.2 2 1 1 1 1
06/02/2026 @ MIL Loss, 6-7 2.1 2 1 1 0 0 Loss
05/30/2026 BOS Win, 3-2 2.0 2 0 0 1 3 Win
05/29/2026 BOS Loss, 1-2 1.0 0 0 0 0 0
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, 101 Days
Service This Yr:75 Days
40-Man Service:5 Years, 18 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 19 0 4 3 0 5.40 20.0 20 12 12 5 9 16 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 3 3 0.0 19 8 13.05 9.00 7.20 4.05 6.03 1.45 142 -0.5 .259        
Pitching AB H 2B 3B HR R BB K SF SH HP AVG OBP SLG OPS      
vs. LHB 23 3 1 0 1 4 4 5 0 0 0 .130 .259 .304 .564      
vs. RHB 56 17 2 0 4 8 5 11 0 0 0 .304 .361 .554 .914      
MAJOR LEAGUE BASEBALL 2026 PITCHING SPLITS
Split G GS W L SV ERA IP HA R ER HR BB K  
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  
Spring Training 10 0 1 2 1 6.60 15.0 22 11 11 4 4 11  
Career 19 0 4 3 0 5.40 20.0 20 12 12 5 9 16  
Home 10 0 3 0 0 0.77 11.2 9 1 1 1 4 11  
Road 9 0 1 3 0 11.88 8.1 11 11 11 4 5 5  
Grass 18 0 4 3 0 5.79 18.2 20 12 12 5 8 16  
Turf 1 0 0 0 0 0.00 1.1 0 0 0 0 1 0  
Day 10 0 2 2 0 6.35 11.1 15 8 8 4 4 10  
Night 9 0 2 1 0 4.15 8.2 5 4 4 1 5 6  
As Reliever / Substitution 19 0 4 3 0 5.40 20.0 20 12 12 5 9 16  
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 6 6 3 2 0 2.72 36.1 39 14 11 2 10 18 0 0.0 0 4 66.7
Pitching SVO BS SV% RA GF BR/9 H/9 K/9 BB/9 FIP WHIP FIP- WAR BABIP        
Overall 0 0 0.0 0 0 12.39 9.66 4.46 2.48 3.76 1.35 87 0.7 .301        
Pitching AB H 2B 3B HR R BB K SF SH HP AVG OBP SLG OPS      
vs. LHB 50 12 2 1 0 6 7 11 0 2 0 .240 .333 .320 .653      
vs. RHB 92 27 2 0 2 8 3 7 1 1 1 .293 .320 .380 .700      
PACIFIC COAST LEAGUE 2026 PITCHING SPLITS
Split G GS W L SV ERA IP HA R ER HR BB K  
This Week 1 1 0 1 0 2.70 6.2 5 4 2 1 2 6  
Last Week 1 1 1 0 0 1.50 6.0 7 1 1 0 1 3  
June 3 3 2 0 0 1.74 20.2 21 4 4 1 4 8  
July 3 3 1 2 0 4.02 15.2 18 10 7 1 6 10  
Career 6 6 3 2 0 2.72 36.1 39 14 11 2 10 18  
Home 3 3 1 2 0 4.70 15.1 17 11 8 1 8 12  
Road 3 3 2 0 0 1.29 21.0 22 3 3 1 2 6  
Grass 6 6 3 2 0 2.72 36.1 39 14 11 2 10 18  
Night 6 6 3 2 0 2.72 36.1 39 14 11 2 10 18  
As Starter 6 6 3 2 0 2.72 36.1 39 14 11 2 10 18  
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 19 0 4 3 0 5.40 20.0 20 12 12 5 9 16 0 0 1.45 .259 6.03 -0.5 78
Total MLB 19 0 4 3 0 5.40 20.0 20 12 12 5 9 16 0 0 1.45 .259 6.03 -0.5 78
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 6 6 3 2 0 2.72 36.1 39 14 11 2 10 18 0 0 1.35 .301 3.76 0.7 158
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 6 6 3 2 0 2.72 36.1 39 14 11 2 10 18 0 0 1.35 .301 3.76 157.9
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 19 0 1 1 0 2 0 1.000 20.0 0.90 +0.2 .991
2026 Sacramento - AAA P 6 6 3 4 1 7 0 1.000 36.1 1.73 +0.2 1.343
TOTAL P 25 6 4 5 1 9 0 1.000 56.1 1.44 +0.4 1.255
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, April 19th , 2026 - OOTP Baseball 26.8 Build 82