Mariners Bolster Pitching Depth, Acquire RHP Cooper Criswell from Mets

The Seattle Mariners have added to their pitching arsenal, acquiring right-handed pitcher Cooper Criswell from the New York Mets in exchange for cash considerations. The transaction, announced by both teams on Friday, offers Seattle another option for their rotation or bullpen as they continue to shape their roster for the upcoming MLB season.

Details of the Trade

Multiple sources, including ESPN and SNY.tv, confirm that the deal centers around cash considerations, with no players exchanged. The Mets designated Criswell for assignment earlier in the week, which made him available for trade. After appearing in seven games for the Boston Red Sox last season, Criswell was briefly part of the Mets organization before being dealt to Seattle.

Who Is Cooper Criswell?

Cooper Criswell is a 27-year-old right-handed pitcher who has bounced between several organizations in recent seasons. Last year, he pitched in seven games for Boston, offering the Red Sox both starting and relief outings. His time with the Mets was short-lived, as he was designated for assignment before logging any appearances for New York.

• Age: 27
• 2025 MLB Appearances: 7 games for Boston
• Previous Teams: Los Angeles Angels, Boston Red Sox, New York Mets

Mariners’ Pitching Plans

For the Mariners, adding Criswell is a low-risk move that could pay dividends, especially given the volatility and demand for pitching depth throughout a 162-game season. Seattle’s front office has a track record of finding value in under-the-radar arms, and Criswell fits the profile of a pitcher who could provide spot starts or long relief innings as needed.

As Seattle continues to pursue postseason aspirations in the highly competitive American League West, every roster spot counts. Criswell’s versatility and recent major league experience make him a potential asset, whether in Tacoma with their Triple-A affiliate or on the Mariners’ big league roster.

Why the Mets Made the Move

For the Mets, the deal is primarily about roster flexibility. Designating Criswell for assignment signaled that he was not in the team’s immediate plans, and flipping him for cash considerations allows New York to recoup some value while opening a 40-man roster spot for future moves. The Mets are expected to remain active in reshaping their pitching staff ahead of spring training.

Summary and Outlook

This transaction exemplifies the kind of under-the-radar maneuvering common in MLB’s offseason. While not a blockbuster, the move gives the Mariners a serviceable arm for depth and provides the Mets with financial flexibility and roster space.

Fans can follow league standings and player statistics as the season approaches to see how Criswell fits into Seattle’s plans and whether the Mets’ strategic roster adjustments pay off in 2026.