Jackson Kowar SEA ST RP R

Born: 10/04/1996 Age: 28

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

Sun 7/27	Mon 7/28	Tue 7/29
@LAA 0-0 2•	@ATH 10:05 PM EDT	@ATH 10:05 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 Round 4
OPL Roster%
0.00%
OPL Average Salary
$0.00

July 24, 2025 1:54 PM : The Mariners recalled Kowar from Triple-A Tacoma on Thursday.
Analysis: Since being optioned to Triple-A in mid-June, Kowar has given up six runs (three earned) over nine innings while striking out 12 batters and walking seven. He owns a 2.08 ERA through 8.2 frames with the Mariners this year, but his career 8.38 ERA will keep him limited to a low-leverage role in Seattle's bullpen. Brandyn Garcia was optioned to Tacoma in a corresponding move.

Year	Team	G	GS	IP	HLD	K	H	BB	HBP	HR	P/IP	Pts
2021	KCR	9	8	30.1	0	29	43	20	2	7	0.61	18.57
2022	KCR	7	0	15.2	2	17	27	11	0	4	0.35	5.53
2023	KCR	23	0	28.0	0	29	34	20	1	4	2.31	64.60
2025	SEA	7	0	8.2	1	8	5	3	1	1	5.4	46.83

Year	Team	G	GS	IP	SV	HLD	K	H	BB	HBP	HR	P/IP	Pts
2018	KCR (A)	9	9	26.1	0	0	22	19	12	0	2	4.89	128.87
2019	KCR (A+)	13	13	74.0	0	0	66	68	22	10	4	4.83	357.60
2019	KCR (AA)	13	13	74.1	0	0	78	73	21	2	8	4.69	348.87
2021	KCR (AAA)	17	16	80.2	0	0	115	66	34	4	7	5.64	455.23
2022	KCR (AAA)	20	20	83.1	0	0	88	95	43	8	14	2.65	220.47
2023	KCR (AAA)	30	1	45.1	2	3	49	51	32	6	4	3.52	159.67
2025	SEA (CPX)	2	2	2.0	0	0	1	2	0	0	0	5.8	11.60
2025	SEA (AAA)	16	0	14.0	2	2	15	9	10	2	0	6.59	92.20

Date	Team	Opponent	Win	Hold	IP	TBF	R	ER	H	K	BB	HBP	HR	Pts
Jun 14, 2025	SEA	CLE	1	0	1.0	3	0	0	0	1	0	0	0	9.40
Jun 10, 2025	SEA	@ARI	0	0	2.0	7	1	1	1	3	0	0	1	5.90
Jun 7, 2025	SEA	@LAA	0	0	0.2	6	1	1	1	1	3	0	0	-4.67
Jun 6, 2025	SEA	@LAA	0	0	1.0	4	0	0	1	1	0	0	0	6.80
Jun 3, 2025	SEA	BAL	0	0	2.0	6	0	0	0	1	0	0	0	16.80
May 31, 2025	SEA	MIN	0	1	1.0	4	0	0	1	0	0	1	0	5.80
May 28, 2025	SEA	WSN	0	0	1.0	4	0	0	1	1	0	0	0	6.80
Sep 27, 2023	KCR	@DET	0	0	1.2	9	2	2	2	1	2	0	1	-9.17
Sep 26, 2023	KCR	@DET	0	0	0.1	3	1	1	2	0	1	0	0	-5.73
Sep 22, 2023	KCR	@HOU	0	0	0.1	5	3	3	3	0	1	0	1	-20.63
Totals			1	1	11.0	51	8	8	12	9	7	1	3	11.30

Date	Level	Team	Opponent	Save	IP	TBF	R	ER	H	K	BB	HBP
Jul 19, 2025	AAA	TAC	ELP	0	1.0	3	0	0	0	2	0	0
Jul 13, 2025	AAA	TAC	@RNO	1	0.1	1	0	0	0	0	0	0
Jul 11, 2025	AAA	TAC	@RNO	0	1.0	7	2	2	2	2	2	0
Jul 8, 2025	AAA	TAC	@RNO	0	1.0	5	0	0	1	0	1	0
Jul 4, 2025	AAA	TAC	@SL	0	1.0	3	0	0	0	3	0	0
Jul 1, 2025	AAA	TAC	SL	0	1.0	5	0	0	0	0	1	1
Jun 28, 2025	AAA	TAC	@RR	0	0.2	6	4	1	1	1	2	0
Jun 21, 2025	AAA	TAC	ABQ	0	1.0	4	0	0	0	1	1	0
Jun 19, 2025	AAA	TAC	ABQ	1	1.0	4	0	0	1	2	0	0
Jun 17, 2025	AAA	TAC	ABQ	0	1.0	3	0	0	0	1	0	0
Totals				2	9.0	41	6	3	5	12	7	1

Date	Transaction Type	Team	Salary
May 29, 2021 6:01 PM	add	The Fish 🐠	$1
October 9, 2021 4:31 AM	increase	The Fish 🐠	$3
December 17, 2021 10:30 PM	move	I Got Matsui. 🍶 (from The Fish 🐠)	$3
April 12, 2022 11:20 AM	cut	I Got Matsui. 🍶	$2
May 15, 2022 10:27 PM	add	I Got Matsui. 🍶	$2
May 15, 2022 10:31 PM	cut	I Got Matsui. 🍶	$1
July 11, 2022 6:54 AM	add	I Got Matsui. 🍶	$1
July 11, 2022 7:26 AM	cut	I Got Matsui. 🍶	$1

Date	Proposing Team	Proposing Team Gives	Accepting Team	Accepting Team Gives
December 16, 2021 10:29 PM	The Fish 🐠	Jackson Kowar SEA ST 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 SEA ST RP R $3 Nolan Gorman STL 2B/3B L $5 10IL	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 AAA SP R $1 15IL Jackson Kowar SEA ST 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 10IL Jackson Kowar SEA ST 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 Util R $29 Kenta Maeda CHC 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 SEA ST 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	Schwell's Bells	Chris Paddack SDP SP R $10 Tommy Edman STL 2B/SS/3B/OF S $5 Jackson Kowar SEA ST RP R $1 Triston Casas BOS 1B L $4 60IL

Jackson Kowar SEA ST RP R

Born: 10/04/1996 Age: 28

FanGraphs Player Page

OPL Player Page

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

MLB Stats

Pitching

MILB Stats

Pitching

Recent Games

Last 10 MLB Games

Last 10 MILB Games

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

Recent Trades for Jackson Kowar in FanGraphs Points

Cutting Players