Mariners acquire right-hander Cooper Criswell from Mets for cash

By Canadian Press on January 23, 2026.

SEATTLE (AP) — The Seattle Mariners acquired right-hander Cooper Criswell from the New York Mets on Friday for cash, and designated left-hander Jhonathan Diaz for assignment.

The 29-year-old Criswell appeared in seven games for Boston last season, going 1-0 with a 3.57 ERA. He was claimed off waivers by the New York Mets on Dec. 5 and designated for assignment Wednesday.

Diaz, 29, appeared in one game with the Mariners in 2025. He was 11-6 in 27 games with Triple-A Tacoma and led the Pacific Coast League with a 4.15 ERA.

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AP MLB: https://apnews.com/hub/mlb

The Associated Press