Overview
- The Mariners confirmed they obtained Cooper Criswell from the Mets for cash considerations after his DFA earlier this week.
- Seattle designated left-hander Jhonathan Díaz for assignment to create roster space for Criswell.
- Criswell, 29, posted a 3.57 ERA over 17 2/3 innings for Boston in 2025 and logged a 3.70 ERA in 65 2/3 innings at Triple-A Worcester.
- He worked as a swingman in 2024 with Boston, recording a 4.08 ERA across 99 1/3 innings, and he is out of minor-league options for 2026.
- Boston had guaranteed Criswell $800,000 for 2026 before designating him in December, after which the Mets claimed him on waivers.