P Ole Kos #40
Age: 35 | Bats: R | Throws: R | Morale: Angry    
12/31/2026
P OLE KOS #40 - AGE: 35 - BATS: R - THROWS: R - MORALE: ANGRY
G GS Rec SV ERA IP HA HR BB K WHIP WAR
5 0 1-1 0 2.16 8.1 9 0 6 8 1.80 0.2
PITCHING RATINGS (OSA)
Overall Pot. Overall Vs Left Vs Right Pot.
Stuff 8 7 8 8
Movement 4 4 4 5
Control 7 6 7 7
PITCHING RATINGS
Pitch Cur. Pot.
Fastball 9 9
Slider 8 8
 
 
 
OTHER PITCHING RATINGS
Velocity 93-95 Mph
Stamina 4
Suggested Role Bullpen
Groundball Percentage 56 %
Hold Runners 3
Defense 5
RUN/BUNT RATINGS
Running Speed: 1
Stealing Ability: 1
Baserunning Inst.: 1
Sacrifice Bunt: 3
Bunt for Hit: 2
   
GAME LOG, LAST 10 GAMES
Date Vs. Result Start IP H R ER BB K Dec
05/15/2026 MON Loss, 1-2 0.1 1 0 0 0 0
05/13/2026 DET Win, 4-3 2.0 1 0 0 0 2 Win
05/09/2026 PC Loss, 4-6 1.1 1 1 1 2 2
05/07/2026 @ VAN Loss, 2-3 2.0 4 1 1 0 2 Loss
05/06/2026 @ VAN Loss, 2-3 1.0 1 0 0 1 1
05/02/2026 @ BOS Loss, 3-5 2.0 2 0 0 3 1
04/25/2026 DET Win, 4-3 1.1 2 0 0 0 2
04/21/2026 @ BOS Loss, 3-6 1.2 2 1 1 1 2
04/17/2026 @ RC Loss, 1-6 2.1 1 1 1 0 4
PERSONALITY
Leader Ability:Very Low
Loyalty:Low
Desire f. Win:Normal
Greed:Very Low
Intelligence:High
Work Ethic:Low
Birthday:04/28/1991
Born in:Vlissingen, ZEE
Nationality:Dutch
Height:6' 0"
Weight:205 lbs
Local Popularity:Unknown
National Pop.:Unknown
STATUS
Contract:Major League Contract
Salary:$900,000
Signed Through:2027 Season
Major Service:9 Years, None
Service This Yr:149 Days
40-Man Service:9 Years, None
Pro Service:8 Years
Arbitration Eligibility:Not eligible, free agent after contract expires!
Option Years:2 option years left
Contract Extension: -
Drafted:-
StatsPlus
StatsPlus Player Page
UNITED STATES PREMIER LEAGUE 2026 PITCHING STATS
Pitching G GS W L SV ERA IP HA R ER HR BB K CG CG% SHO QS QS%
Overall 5 0 1 1 0 2.16 8.1 9 2 2 0 6 8 0 0.0 0 0 0.0
Pitching SVO BS SV% RA GF R/9 H/9 K/9 BB/9 FIP WHIP FIP- WAR BABIP        
Overall 1 1 0.0 5 4 16.20 9.72 8.64 6.48 2.51 1.80 67 0.2 .360        
Pitching AB H 2B 3B HR R BB K SF SH HP AVG OBP SLG OPS      
vs. LHB 13 6 1 0 0 2 3 1 0 0 0 .462 .562 .538 1.101      
vs. RHB 19 3 0 0 0 0 3 7 1 0 0 .158 .261 .158 .419      
UNITED STATES PREMIER LEAGUE 2026 PITCHING SPLITS
Split G GS W L SV ERA IP HA R ER HR BB K  
May 5 0 1 1 0 2.16 8.1 9 2 2 0 6 8  
Spring Training 3 0 0 0 0 3.38 5.1 5 2 2 2 1 8  
Postseason 1 0 0 0 0 0.00 0.1 1 0 0 0 0 0  
Last Year 49 0 5 4 3 1.27 70.2 41 10 10 2 26 66  
2 Years Ago 55 0 3 4 1 3.06 61.2 59 24 21 6 14 51  
Career 343 2 41 29 42 3.12 461.2 368 174 160 55 151 469  
Home 2 0 1 0 0 2.70 3.1 2 1 1 0 2 4  
Road 3 0 0 1 0 1.80 5.0 7 1 1 0 4 4  
Grass 5 0 1 1 0 2.16 8.1 9 2 2 0 6 8  
Day 2 0 1 1 0 2.25 4.0 5 1 1 0 0 4  
Night 3 0 0 0 0 2.08 4.1 4 1 1 0 6 4  
As Reliever / Substitution 5 0 1 1 0 2.16 8.1 9 2 2 0 6 8  
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+
2018 California - PL 27 49 2 11 2 4 2.76 81.2 62 28 25 6 30 95 0 0 1.13 .280 2.95 1.5 137
2019 California - PL 28 39 0 10 2 3 3.10 52.1 38 20 18 7 19 48 0 0 1.09 .225 4.12 -0.1 120
2020 California - PL 29 38 0 6 2 3 3.38 56.0 41 27 21 9 19 56 0 0 1.07 .225 4.28 -0.4 104
2021 California - PL 30 41 0 3 5 15 3.26 49.2 38 18 18 8 7 54 0 0 0.91 .256 3.67 0.4 121
2022 Athletic Club KC - PL 31 21 0 0 2 4 8.75 23.2 29 23 23 7 9 27 0 0 1.61 .344 5.43 -0.5 42
2023 Athletic Club KC - PL 32 46 0 2 7 9 3.43 57.2 51 22 22 10 21 64 0 0 1.25 .295 4.16 -0.0 113
2024 Athletic Club KC - PL 33 55 0 3 4 1 3.06 61.2 59 24 21 6 14 51 0 0 1.18 .301 3.15 0.6 120
2025 Athletic Club KC - PL 34 49 0 5 4 3 1.27 70.2 41 10 10 2 26 66 0 0 0.95 .227 2.28 1.4 272
2026 Athletic Club KC - PL 35 5 0 1 1 0 2.16 8.1 9 2 2 0 6 8 0 0 1.80 .360 2.51 0.2 174
Total PL 343 2 41 29 42 3.12 461.2 368 174 160 55 151 469 0 0 1.12 .267 3.52 3.1 141
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+
2018 Oceanside - AAA 27 1 0 0 0 0 0.00 0.1 0 0 0 0 0 1 0 0 0.00 .000 0.00 0.0 999
Total PAAA 1 0 0 0 0 0.00 0.1 0 0 0 0 0 1 0 0 0.00 .000 0.00 999.0
CAREER POSTSEASON 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+
2018 California - 3L 27 1 0 0 0 0 13.50 0.2 1 1 1 1 1 2 0 0 3.00 .000 0.00 0.0 0
2018 California - PL 27 7 0 1 0 0 4.50 8.0 5 4 4 1 7 9 0 0 1.50 .222 0.00 0.0 0
2018 Total - PL 27 8 0 1 0 0 5.19 8.2 6 5 5 2 8 11 0 0 1.62 .222 0.00 0.0 0
2019 California - PL 28 6 0 2 0 0 1.23 7.1 4 4 1 1 2 11 0 0 0.82 .176 0.00 0.0 0
2020 California - 3L 29 2 0 0 0 0 0.00 2.1 1 0 0 0 0 5 0 0 0.43 .500 0.00 0.0 0
2020 California - PL 29 1 0 0 0 0 0.00 2.0 0 0 0 0 0 0 0 0 0.00 .000 0.00 0.0 0
2020 Total - PL 29 3 0 0 0 0 0.00 4.1 1 0 0 0 0 5 0 0 0.23 .125 0.00 0.0 0
2021 California - 3L 30 1 0 0 0 0 0.00 1.0 1 0 0 0 0 2 0 0 1.00 .500 0.00 0.0 0
2021 California - PL 30 3 0 0 0 0 6.75 4.0 2 3 3 0 1 3 0 0 0.75 .182 0.00 0.0 0
2021 Total - PL 30 4 0 0 0 0 5.40 5.0 3 3 3 0 1 5 0 0 0.80 .231 0.00 0.0 0
2022 Athletic Club KC - PL 31 4 0 0 0 1 10.12 2.2 5 3 3 1 0 3 0 0 1.88 .444 0.00 0.0 0
2023 Athletic Club KC - PL 32 3 0 0 0 1 0.00 3.1 0 0 0 0 0 4 0 0 0.00 .000 0.00 0.0 0
2024 Athletic Club KC - 3L 33 2 0 0 1 0 4.50 2.0 3 1 1 0 1 1 0 0 2.00 .429 0.00 0.0 0
2024 Athletic Club KC - PL 33 5 0 0 0 0 3.18 5.2 8 5 2 1 1 7 0 0 1.59 .438 0.00 0.0 0
2024 Total - PL 33 7 0 0 1 0 3.52 7.2 11 6 3 1 2 8 0 0 1.70 .435 0.00 0.0 0
2025 Athletic Club KC - SL 34 1 0 0 0 0 0.00 1.0 1 0 0 0 1 1 0 0 2.00 .333 0.00 0.0 0
2025 Athletic Club KC - PL 34 2 0 0 0 0 5.40 3.1 4 2 2 0 3 3 0 0 2.10 .500 0.00 0.0 0
2025 Total - PL 34 3 0 0 0 0 4.15 4.1 5 2 2 0 4 4 0 0 2.08 .455 0.00 0.0 0
2026 Athletic Club KC - PL 35 1 0 0 0 0 0.00 0.1 1 0 0 0 0 0 0 0 3.00 .500 0.00 0.0 0
Total PL 32 0 3 0 2 3.68 36.2 29 21 15 4 14 40 0 0 1.17 .269 3.25 265.9
Total SL 1 0 0 0 0 0.00 1.0 1 0 0 0 1 1 0 0 2.00 .333 3.82 999.0
Total 3L 6 0 0 1 0 3.00 6.0 6 2 2 1 2 10 0 0 1.33 .455 3.58 590.7
CAREER FIELDING STATS
Year/Team/League POS G GS PO A DP TC E PCT INN RNG ZR EFF PB RSTA RTO RTO%
2018 California - ML P 49 2 8 8 0 16 0 1.000 81.2 1.76 -0.0 1.025
2019 California - ML P 39 0 2 6 0 8 0 1.000 52.1 1.38 +0.1 1.010
2020 California - ML P 38 0 4 6 0 10 0 1.000 56.0 1.61 -0.0 .997
2021 California - ML P 39 0 1 8 0 9 0 1.000 49.2 1.63 +1.2 1.238
2022 Athletic Club KC - ML P 19 0 4 3 0 7 0 1.000 23.2 2.66 +0.0 1.036
2023 Athletic Club KC - ML P 44 0 2 6 1 8 0 1.000 57.2 1.25 -0.4 .899
2024 Athletic Club KC - ML P 54 0 1 3 0 5 1 .800 61.2 0.58 +0.4 1.581
2025 Athletic Club KC - ML P 48 0 3 3 0 6 0 1.000 70.2 0.76 +0.4 1.291
2026 Athletic Club KC - ML P 5 0 0 1 0 1 0 1.000 8.1 1.08 +0.5 2.051
TOTAL P 335 2 25 44 1 70 1 .986 461.2 1.35 +2.2 1.111
PLAYER HISTORY
01/01/2018 Entered the Menard's Third League as a free agent from The Netherlands.
01/16/2018 Signed a 3-year contract worth a total of $7,620,000 with the California Oceanliners organization.
01/01/2019 OSA scouting updated ratings (potential): Stuff: 12 (12); Movement: 4 (4); Control: 8 (8).
01/01/2020 OSA scouting updated ratings (potential): Stuff: 9 (9); Movement: 3 (3); Control: 7 (7).
06/10/2020 Injured (shoulder soreness), day-to-day for 3 days.
11/05/2020 Received a 1-year contract worth a total of $3,800,000 through arbitration.
01/01/2021 OSA scouting updated ratings (potential): Stuff: 8 (8); Movement: 5 (5); Control: 7 (7).
11/04/2021 Received a 1-year contract worth a total of $4,609,500 through arbitration.
01/01/2022 OSA scouting updated ratings (potential): Stuff: 8 (8); Movement: 5 (5); Control: 7 (7).
01/01/2022 Was traded by the California Oceanliners to the Athletic Club KC in exchange for SS Harry Fuller, CF Greg Robinson.
11/09/2022 Received a 1-year contract worth a total of $5,300,000 through arbitration.
01/01/2023 OSA scouting updated ratings (potential): Stuff: 8 (8); Movement: 5 (5); Control: 7 (7).
02/03/2023 Signed a 2-year contract extension worth a total of $1,700,000 with the Athletic Club KC organization.
01/01/2024 OSA scouting updated ratings (potential): Stuff: 8 (8); Movement: 5 (5); Control: 7 (7).
01/01/2025 OSA scouting updated ratings (potential): Stuff: 8 (8); Movement: 4 (5); Control: 7 (7).
01/05/2025 Signed a 2-year contract extension worth a total of $1,800,000 with the Athletic Club KC organization.
07/16/2025 Injured (back stiffness), day-to-day for one week.
11/01/2025 Finished 2nd in 2025 PL PL Reliever of the Year Award voting.
01/01/2026 OSA scouting updated ratings (potential): Stuff: 8 (8); Movement: 5 (5); Control: 7 (7).
05/17/2026 Injured on 05/15/2026, diagnosed with a torn labrum, will miss 8-9 months.
LEADERBOARD APPEARANCES
Year G Rank
2018 49 9
Year SV Rank
2021 15 5
Year RA Rank
2018 47 10
Year GF Rank
2021 32 5
Monday, March 20th, 2017 - OOTP Baseball 17.12 Build 75