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Mariners Acquire LHP Josh Simpson from Miami Marlins in Exchange for Cash Considerations

RHP Logan Evans placed on 60-day Injured List in a corresponding move
February 16, 2026

PEORIA, Ariz. – Seattle Mariners Executive Vice President & General Manager of Baseball Operations Justin Hollander announced today the Mariners have acquired LHP Josh Simpson from the Miami Marlins in exchange for cash considerations. In a corresponding move, RHP Logan Evans was placed on the 60-day Injured List. The Mariners

Mariners Acquire Infielder/Outfielder Brendan Donovan From St. Louis Cardinals as Part of Three-Team Trade

Mariners send INF Ben Williamson to Tampa Bay Rays, RHP Jurrangelo Cijntje, OF Tai Peete and 2026 Competitive Balance Round B draft pick to St. Louis Cardinals; Rays send OF Colton Ledbetter and 2026 Competitive Balance Round B draft pick to Cardinals
February 2, 2026

SEATTLE – Seattle Mariners Executive Vice President & General Manager of Baseball Operations Justin Hollander announced today the Mariners have acquired INF/OF Brendan Donovan from the St. Louis Cardinals as part of a three-team trade. The Mariners sent INF Ben Williamson to the Tampa Bay Rays, RHP/LHP Jurrangelo Cijntje, OF

Mariners Acquire C Jhonny Pereda from Twins in Exchange for Cash Considerations

RHP Jackson Kowar designated for assignment in a corresponding move
January 27, 2026

SEATTLE – Seattle Mariners Executive Vice President & General Manager of Baseball Operations Justin Hollander announced today the Mariners have acquired C Jhonny Pereda from the Minnesota Twins in exchange for cash considerations. In a corresponding move, RHP Jackson Kowar was designated for assignment. The Mariners 40-man roster remains full

Mariners Acquire RHP Cooper Criswell from Mets in Exchange for Cash Considerations

Criswell was 1-0 with a 3.57 ERA in 7 games with Boston in 2025
January 23, 2026

SEATTLE – Seattle Mariners Executive Vice President & General Manager of Baseball Operations Justin Hollander announced today the Mariners have acquired RHP Cooper Criswell from the New York Mets in exchange for cash considerations. In a corresponding move, LHP Jhonathan Díaz was designated for assignment. The Mariners 40-man roster remains