Jackson Kowar
RP - Seattle Mariners
2026 Outlook
Roster %
Eligibility
Availability
The Mariners optioned Jackson Kowar to Triple-A Tacoma.
Fantasy Impact
Kowar has struggled across six appearances in August. Sauryn Lao had his contract selected as the corresponding move.
The Mariners recalled Jackson Kowar from Triple-A Tacoma.
Fantasy Impact
Kowar takes the bullpen spot of Trent Thornton who tore his Achilles. He'll hold a low-leverage role in the Mariners bullpen.
The Mariners optioned Jackson Kowar to Triple-A Tacoma.
Fantasy Impact
The Mariners needed to open a roster spot with Caleb Ferguson added to the active roster. Kowar gets sent down as a result.
The Mariners recalled Jackson Kowar from Triple-A Tacoma.
Fantasy Impact
Kowar takes the bullpen spot of Brandyn Garcia who was optioned. He'll hold a middle relief role for Seattle.
Jackson Kowar was seen in the Mariners clubhouse in Texas.
Fantasy Impact
It is unclear if an injury occurred to a Mariners reliever. There should be an update provided by Seattle before first pitch against the Rangers.
