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Jackson Kowar SEA RP R 

Born: 10/04/1996 Age: 28

FanGraphs Player Page

2025 OPL OPL Player Page

On MLB 40-man: YES
Acquired: Trade (ATL) Dec'23

Sat 8/23 Sun 8/24 Mon 8/25
ATH 9:40 PM EDT ATH 4:10 PM EDT SDP 9:40 PM EDT

Positions
RP
2026 Earned Positions
RP

All Leagues
Average $0.00 Median $0.00
FanGraphs Points
Average $0.00 Median $0.00

All Leagues
Average $1.00 Median $1.00
FanGraphs Points
Average $1.30 Median $1.00

Roster%
0%
Change
7Day 0%
30Day 0%

2025 OPL 2025 OPL Round 6
OPL Roster%
0.00%
OPL Average Salary
$0.00


August 19, 2025 4:09 PM : The Mariners optioned Kowar to Triple-A Tacoma on Tuesday.
Analysis: Kowar had allowed four runs over 2.1 innings covering his last three relief appearances. He'll head to Tacoma for now but could get another opportunity in the Seattle bullpen later on this season.

MLB Stats

Pitching

YearTeamGGSIP SV HLD K H BB HBP HR P/IP Pts
2021KCR9830.10029432027 0.61 18.57
2022KCR7015.20217271104 0.35 5.53
2023KCR23028.00029342014 2.31 64.60
2025SEA15017.0011514714 2.95 50.20

MILB Stats

Pitching

YearTeamGGSIP SV HLD K H BB HBP HR P/IP Pts
2018KCR (A)9926.10022191202 4.89 128.87
2019KCR (A+)131374.000666822104 4.83 357.60
2019KCR (AA)131374.10078732128 4.69 348.87
2021KCR (AAA)171680.200115663447 5.64 455.23
2022KCR (AAA)202083.100889543814 2.65 220.47
2023KCR (AAA)30145.12349513264 3.52 159.67
2025SEA (CPX)222.00012000 5.8 11.60
2025SEA (AAA)16014.0221591020 6.59 92.20

Recent Games

Last 10 MLB Games

DateTeamOpponentGSWinSaveHoldIPTBF RERHKBBHBPHR Pts
Aug 18, 2025 SEA @PHI 0 0 0 0 1.0 7 1 1 2 1 2 0 0 -1.80
Aug 17, 2025 SEA @NYM 0 0 0 0 1.0 5 0 0 1 2 1 0 0 5.80
Aug 15, 2025 SEA @NYM 0 0 0 0 0.1 4 3 3 3 1 0 0 1 -15.63
Aug 14, 2025 SEA @BAL 0 0 0 0 1.0 3 0 0 0 1 0 0 0 9.40
Aug 7, 2025 SEA CHW 0 1 0 0 1.0 3 0 0 0 0 0 0 0 7.40
Aug 5, 2025 SEA CHW 0 0 0 0 1.0 5 2 2 2 1 0 0 2 -20.40
Jul 29, 2025 SEA @ATH 0 0 0 0 2.0 6 0 0 0 1 0 0 0 16.80
Jul 27, 2025 SEA @LAA 0 0 0 0 1.0 4 0 0 1 0 1 0 0 1.80
Jun 14, 2025 SEA CLE 0 1 0 0 1.0 3 0 0 0 1 0 0 0 9.40
Jun 10, 2025 SEA @ARI 0 0 0 0 2.0 7 1 1 1 3 0 0 1 5.90
Totals 0 2 0 0 11.1 47 7 7 10 11 4 0 4 18.67

Last 10 MILB Games

DateLevelTeamOpponentGSWinSave IPTBFRERHKBBHBPHR
Jul 19, 2025 AAA TAC ELP 0 0 0 1.0 3 0 0 0 2 0 0 0
Jul 13, 2025 AAA TAC @RNO 0 0 1 0.1 1 0 0 0 0 0 0 0
Jul 11, 2025 AAA TAC @RNO 0 0 0 1.0 7 2 2 2 2 2 0 0
Jul 8, 2025 AAA TAC @RNO 0 0 0 1.0 5 0 0 1 0 1 0 0
Jul 4, 2025 AAA TAC @SL 0 0 0 1.0 3 0 0 0 3 0 0 0
Jul 1, 2025 AAA TAC SL 0 0 0 1.0 5 0 0 0 0 1 1 0
Jun 28, 2025 AAA TAC @RR 0 0 0 0.2 6 4 1 1 1 2 0 0
Jun 21, 2025 AAA TAC ABQ 0 0 0 1.0 4 0 0 0 1 1 0 0
Jun 19, 2025 AAA TAC ABQ 0 0 1 1.0 4 0 0 1 2 0 0 0
Jun 17, 2025 AAA TAC ABQ 0 0 0 1.0 3 0 0 0 1 0 0 0
Totals 0 0 2 9.0 41 6 3 5 12 7 1 0

Avg Salary & Roster%

Last 30 days

2026 Position Eligibility Progress

To gain eligibility, a player must have 5 GS or 10 G at a position in the majors, or 20 G at a position in the minors.

Transaction History

Date Transaction Type Team Salary
June 9, 2021 9:54 AM add The Profane Undertones $3
June 25, 2021 7:31 AM cut The Profane Undertones $2
July 27, 2021 2:29 PM add The Profane Undertones $2
August 2, 2021 9:03 PM cut The Profane Undertones $1
September 4, 2021 7:24 AM add The Profane Undertones $1
October 9, 2021 4:51 AM increase The Profane Undertones $3
November 15, 2021 12:49 AM increase The Profane Undertones $4
May 8, 2022 9:15 AM cut The Profane Undertones $2
June 10, 2022 5:53 AM add The Profane Undertones $2
June 10, 2022 11:43 AM cut The Profane Undertones $1
July 12, 2022 11:56 AM add The Profane Undertones $1
July 12, 2022 10:30 PM cut The Profane Undertones $1
August 14, 2022 7:32 PM add The Profane Undertones $1
August 14, 2022 8:53 PM cut The Profane Undertones $1
September 16, 2022 7:35 AM add The Profane Undertones $1
September 16, 2022 8:16 AM cut The Profane Undertones $1

Recent Trades for Jackson Kowar in FanGraphs Points

Date Proposing Team Proposing Team Gives Accepting Team Accepting Team Gives
December 16, 2021 10:29 PM The Fish 🐠 Jackson Kowar KCR RP R $3 
 I Got Matsui. 🍶 Tommy Pham SDP OF R $11 
Jesus Luzardo MIA SP L $9 
December 9, 2021 10:56 AM Callaway's Call Logs Tony Gonsolin LAD SP R $8 60IL
Jackson Kowar KCR RP R $3 
Nolan Gorman STL 2B/3B L $5 
 A Sonny Gray in Glasnow Sonny Gray CIN SP R $10 
July 2, 2021 10:10 PM Smoked City 🔥 James Kaprielian TOR CPX SP/RP R $2
Tanner Houck BOS SP R $1 60IL 
Jackson Kowar KCR RP R $1 
 The Crime Dogs Gerrit Cole NYY SP R $42 60IL
$38 loan
June 25, 2021 7:43 AM 3 days to D-day Nate Pearson CHC AAA RP R $7
Alec Bohm PHI 1B/3B R $9 
Jackson Kowar KCR RP R $6 
 RIP Bob Uecker Anthony Rendon LAA 3B R $42 60IL
$25 loan
June 4, 2021 7:38 AM Big League Chew-pacabras Giancarlo Stanton NYY OF R $29 
Kenta Maeda NYY AAA SP/RP R $6
$13 loan 		Eddie's Malort Bar Kyle Schwarber WSN OF L $11 
Jesus Sanchez MIA OF L $4 
Jackson Kowar KCR RP R $1 
Jarren Duran BOS OF L $2 
May 24, 2021 8:33 PM 4 Baggers Eduardo Escobar ARI Util S $1
Tim Anderson CHW 2B/SS R $6
Walker Buehler LAD SP R $18 
$5 loan 		He's a Moniak, MO-niak Chris Paddack SDP SP R $10 
Tommy Edman STL 2B/SS/3B/OF S $5 10IL 
Jackson Kowar KCR RP R $1 
Triston Casas BOS 1B L $4 60IL