OUTJackson Kowar RP SEA Wed 9/3/25 6:10 PM
OUTJackson Kowar
RP SEA
The Mariners recalled Kowar from Triple-A Tacoma and placed him on the 15-day injured list Wednesday with a right shoulder impingement, retroactive to Aug. 19.
EDGE Analysis
Kowar was sent down to Triple-A in mid-August but hasn't pitched for Tacoma since being demoted. Now dealing with a shoulder issue, the 28-year-old will return to the big-league club to rehab his injury. He'll be eligible to return from the IL as soon as he's healthy, but there's currently no telling how close he is to activation.
OUTJackson Kowar RP SEA Tue 8/19/25 4:09 PM
OUTJackson Kowar
RP SEA
The Mariners optioned Kowar to Triple-A Tacoma on Tuesday.
EDGE Analysis
Kowar had allowed four runs over 2.1 innings covering his last three outings. He'll head to Tacoma for now but could get another opportunity later on this season.
OUTJackson Kowar RP SEA Fri 8/1/25 6:06 PM
OUTJackson Kowar
RP SEA
The Mariners recalled Kowar from Triple-A Tacoma on Friday.
EDGE Analysis
Kowar was optioned to Triple-A on Wednesday, but he'll turn around and head back to Seattle to replace the injured Trent Thornton (Achilles). Kowar will likely take on a middle-relief role with the Mariners after posting a 1.54 ERA and 0.86 WHIP through 11.2 innings with the big club this season.
OUTJackson Kowar RP SEA Wed 7/30/25 9:33 PM
OUTJackson Kowar
RP SEA
The Mariners optioned Kowar to Triple-A Tacoma on Wednesday.
EDGE Analysis
The Mariners had to make room in their bullpen after acquiring Caleb Ferguson from Pittsburgh on Wednesday, and Kowar will officially end up as the roster casualty. The 28-year-old righty pitched three scoreless innings after being recalled from Triple-A on Thursday, lowering his big-league ERA to 1.54 through 11.2 frames.
OUTJackson Kowar RP SEA Thu 7/24/25 1:54 PM
OUTJackson Kowar
RP SEA
The Mariners recalled Kowar from Triple-A Tacoma on Thursday.
EDGE 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.
OUTJackson Kowar RP SEA Mon 6/16/25 5:50 PM
OUTJackson Kowar
RP SEA
The Mariners optioned Kowar to Triple-A Tacoma on Monday, Shannon Drayer of SeattleSports.com reports.
EDGE Analysis
The transaction frees a spot on the active roster for the return of Logan Gilbert (elbow). Kowar made seven appearances after being activated late last month, yielding two runs with an 8:3 K:BB over 8.2 frames.
OUTJackson Kowar RP SEA Wed 5/28/25 6:09 PM
OUTJackson Kowar
RP SEA
The Mariners reinstated Kowar (elbow) from the 60-day injured list Wednesday.
EDGE Analysis
Kowar will return to the majors after missing the entire 2024 season following Tommy John surgery last March. The 28-year-old right hander posted a 2.57 ERA and 1.29 WHIP across seven innings during his rehab assignment and did not yield a run in each of his last three outings. Kowar will be available to make his 2025 debut out of the Mariners' bullpen against the Nationals on Wednesday. Logan Evans was optioned to Triple-A Tacoma in a corresponding move.
OUTJackson Kowar RP SEA Wed 5/28/25 2:47 AM
OUTJackson Kowar
RP SEA
Kowar (elbow) could be nearing his activation from the 60-day injured list, MLB.com reports.
EDGE Analysis
Kowar has produced solid results in the minor leagues amidst his recovery from 2024 Tommy John surgery, posting a 2.57 ERA, 1.29 WHIP and 4:3 K:BB over seven innings (eight appearances) on his rehab assignment. The 24-year-old right-hander should be ready to make both his Mariners and season debut by early June, and he'll likely operate as a multi-inning reliever in Seattle's bullpen once he's fully up to speed.
OUTJackson Kowar RP SEA Sun 3/2/25 4:26 PM
OUTJackson Kowar
RP SEA
Kowar (elbow) was placed on the 60-day injured list Sunday, Daniel Kramer of MLB.com reports.
EDGE Analysis
The right-hander missed all of last season after undergoing Tommy John surgery in March, and it's not a major surprise he'll be unavailable for at least the first two months of the 2025 season. Kowar has been throwing bullpen sessions and could be ready to face live batters before the end of spring training.
OUTJackson Kowar RP SEA Mon 2/17/25 1:32 PM
OUTJackson Kowar
RP SEA
Kowar (elbow) threw a bullpen session Monday, Ryan Divish of The Seattle Times reports.
EDGE Analysis
Kowar will likely open the season on the injured list, but the right-hander looks to be nearing the finish line in his recovery from Tommy John surgery, which he underwent last March. He'll presumably remain limited to throwing bullpen sessions and playing catch in the early weeks of spring training, but he could be ready to face hitters in live batting practice before the end of camp. Kowar has a minor-league option remaining, so the Mariners could choose to send him to Triple-A Tacoma once he's fully recovered from surgery if the big club doesn't have a spot available for him in its bullpen.