Overview
- Jason Kanzler was announced Tuesday as Seattle’s new manager, succeeding Dan Wilson after the club finished 76–86 in 2026.
- Kanzler will be a first-time MLB manager coming from the Chicago Cubs, where he served as director of player development after working as a hitting coach on the Houston Astros’ MLB staff through 2023.
- The Mariners made the change after a disappointing season that featured an unstable starting rotation and career-worst offensive years from core players Julio Rodríguez and Cal Raleigh, plus criticism of in-game decisions under Wilson.
- Seattle’s front office signaled the hire was driven by roster needs, with promoted prospects such as Colt Emerson, Kade Anderson, Lázaro Montes, and Michael Arroyo expected to play larger roles under a manager with development expertise.
- Next steps include Kanzler naming a coaching staff and accelerating prospect transitions, a move that could reshape playing time and roster construction as the Mariners seek to return to American League contention.