The Seattle Mariners have officially announced their 2026 Opening Day roster, featuring a few surprises and some depth adjustments due to early-season injuries. While the team largely avoided major setbacks in Spring Training, starting shortstop J.P. Crawford, starting right-hander Bryce Miller, and utility player Miles Mastrobuoni will all begin the year on the injured list. Crawford and Miller are expected back in early April, while Mastrobuoni’s timeline remains less clear, creating opportunities for depth players to see early action.
Catchers
- Cal Raleigh
- Mitch Garver
Garver earned the backup catching role over Andrew Knizner and Jhonny Pareda, giving Seattle a more reliable tandem behind the plate. Knizner could be designated for assignment to fully open the roster slot, with Pareda serving as Triple-A depth.
Infielders
- Ryan Bliss
- 1B Josh Naylor
- Leo Rivas
- Cole Young
Bliss earned a spot on the Opening Day roster thanks to a strong spring, outlasting top prospect Colt Emerson, who was optioned back to Triple-A Tacoma. Rivas and Young will share shortstop duties until Crawford returns.
Utility Players
- Brendan Donovan
- Luke Raley
- Rob Refsnyder
Donovan’s versatility keeps him in a key bench role, while Raley’s return from injury bolsters Seattle’s outfield depth and provides DH flexibility for Randy Arozarena. Refsnyder, at 35, brings a mix of infield and corner outfield coverage but is primarily expected to provide offensive production off the bench.
Outfielders
- Randy Arozarena
- cOF Dominic Canzone
- Victor Robles
- Julio Rodríguez
Seattle’s outfield remains one of the most talented in recent team history, drawing comparisons to the era of Ichiro Suzuki and Mike Cameron.
Starting Pitchers
- Logan Gilbert
- George Kirby
- Bryan Woo
- Luis Castillo
- Emerson Hancock
The rotation is largely set, with Miller expected to slot back in shortly and resume his role without major disruption.
Bullpen
- RHP Eduard Bazardo
- RHP Matt Brash
- RHP Cooper Criswell
- LHP José A. Ferrer
- RHP Casey Legumina
- RHP Andrés Muñoz
- LHP Gabe Speier
- RHP Carlos Vargas
Seattle’s bullpen remains stable with only Ferrer and Criswell as newcomers. Ferrer, acquired in the offseason, is expected to handle high-leverage innings, while Criswell provides long-relief flexibility. Other arms like Vargas and Legumina remain due to roster constraints and lack of minor league options, meaning early-season continuity is likely.
Overall, while injuries create temporary openings, the Mariners enter 2026 with a balanced roster and versatile depth, ready to navigate the opening weeks of the season.
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