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The Seattle Mariners are expected to move at least one starting pitcher this offseason to fill holes on the roster, industry sources told ESPN.
ESPN’s Alden Gonzalez reported Friday that George Kirby, Bryce Miller, and Emerson Hancock are the more attainable starters. Seattle wants another hitter or two, preferably right-handed, and is open to adding them on the left side of the infield or at the outfield corners, according to a source cited by ESPN.
The Mariners also want late-inning relievers to bridge the gap to closer Andrés Muñoz.
Seattle Mariners Lean On Development After A Losing Season
Seattle finished 10 games under .500 in 2026 after opening the season with World Series expectations, ESPN reported. The club’s focus is on filling specific holes and developing players at the major league level, not blowing up the roster. No regular in the Mariners’ lineup is older than 30, according to ESPN.
That approach led Seattle to hire Jason Kanzler, the director of player development for the Chicago Cubs, as manager Nov. 3. Kanzler, 36, had not managed at any level. He replaced Dan Wilson, who was fired after the season.
Mariners president of baseball operations Jerry Dipoto said in a statement that the club wanted a manager who could challenge the whole organization to improve.
“Jason has the mindset, expertise, communication skills, and intensity to help create a championship standard here in Seattle,” Dipoto said.
Mariners Fill Out Jason Kanzler’s Staff
On Nov. 9, Seattle hired Tanner Swanson as bench coach and CJ Gillman as hitting coach. Swanson spent seven seasons on the New York Yankees major league staff, most recently as field coordinator and director of catching.
Seattle listened to offers on Kirby and Hancock before the 2026 trade deadline but kept both. Outfielder Randy Arozarena received a $23.15 million qualifying offer from the Mariners and has until Nov. 17 to decide.
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