Major League Baseball just got a little more interesting! The Seattle Mariners have made a bold move by acquiring right-handed pitcher Cooper Criswell from the New York Mets in exchange for cash, according to ESPN. But here's where it gets intriguing: this deal also involved designating left-hander Jhonathan Diaz for assignment, leaving fans and analysts alike wondering about the team's strategy.
Announced on January 23, 2026, at 8:03 PM ET, this transaction highlights the Mariners' ongoing efforts to reshape their roster. Criswell, a 29-year-old righty, brings a fresh perspective to Seattle after a brief but notable stint with the Boston Red Sox last season. In seven games, he posted a 1-0 record with a respectable 3.57 ERA, showcasing his potential as a reliable arm. His journey took an unexpected turn when he was claimed off waivers by the Mets on December 5, only to be designated for assignment just weeks later. Now, he finds himself in Seattle, where he'll look to make a lasting impact.
On the flip side, Jhonathan Diaz, also 29, had a limited role with the Mariners in 2025, appearing in just one game at the major league level. However, his performance in Triple-A Tacoma was impressive, going 11-6 in 27 games and leading the Pacific Coast League with a 4.15 ERA. And this is the part most people miss: Diaz's minor league success raises questions about whether the Mariners are letting go of a hidden gem. Is this a strategic move to prioritize immediate major league readiness, or could it be a missed opportunity?
This trade sparks a debate: Are the Mariners making a calculated risk by bringing in Criswell, or are they undervaluing Diaz's potential? What do you think? Is this a smart move for Seattle, or could they be overlooking a valuable asset in Diaz? Let us know your thoughts in the comments below!
