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.

After garnering plenty of attention and adulation for their success in 2025, the Seattle Mariners will get plenty of screen time this year as they attempt an encore

Heading into the offseason, the Mariners had seven arbitration-eligible players. Miller, George Kirby, Logan Gilbert, Randy Arozarena, Matt Brash and Gabe Speier were those players. The M's had until Jan. 9 to come to a contract agreement with each player before exchanging arbitration numbers.

Even after Alex Bregman, Kyle Tucker and Bo Bichette recently joined new teams in free agency, one of the league's best middle-of-the-order hitters remains available on the open market.

Baseball America released its first top 100 prospects list for the 2026 season on Wednesday, and it featured four young Seattle Mariners on the ledger. Shortsto

The 2025 Seattle Mariners were littered with homegrown talent. Cal Raleigh, George Kirby, Logan Gilbert, Bryan Woo, and Julio Rodriguez were all difference-makers — and all of those players came through the system.

Five Seattle Mariners land on MLB’s Top 100 players list, ranking third most in baseball and signaling the club’s rise among the elite.

The Mariners are in talks with the Cardinals over a left-handed reliever with a $4.25 million pre-arbitration deal for 2026.

The Seattle Mariners need to do what they can to replace Jorge Polanco at second