2025 Seattle Mariners season

2025 Seattle Mariners
American League West champions
LeagueAmerican League
DivisionWest
BallparkT-Mobile Park
CitySeattle, Washington
Record90–72 (.556)
Divisional place1st
OwnersBaseball Club of Seattle, LP, represented by CEO John Stanton
President of baseball operationsJerry Dipoto
General managerJustin Hollander
ManagerDan Wilson
Average attendance31,333
TelevisionRoot Sports Northwest
(Aaron Goldsmith, Jay Buhner, Dave Valle, Angie Mentink, Ryan Rowland-Smith, Bill Krueger, Jen Mueller, Brad Adam)
RadioESPN-710
Seattle Mariners Radio Network
(Rick Rizzs, Gary Hill Jr., Mark McLemore, Ken Phelps, Angie Mentink, Ryan Rowland-Smith, Shannon Drayer)

The 2025 Seattle Mariners season was the 49th season in franchise history and their 26th full season (27th overall) at T-Mobile Park, their home ballpark in Seattle, Washington. The Mariners won their first American League (AL) West divisional title and Division Series since 2001.

Catcher Cal Raleigh had an unprecedented home run hitting season, finishing the regular season with 60 home runs. He broke the franchise record for home runs (set by Ken Griffey Jr.) and major league records for home runs by a catcher and switch hitter in a season. He also won the Home Run Derby, which Griffey won three times.

Raleigh, Randy Arozarena, Julio Rodríguez, Bryan Woo, and Andrés Muñoz were selected to the All-Star Game. Raleigh was named the AL Player of the Month for June, and Muñoz was named the AL Reliever of the Month for March/April. Raleigh won the Silver Slugger Award, and he and Rodríguez were named to the All-MLB Team. Woo and Muñoz were named to the All-MLB second team.

On August 9, the Mariners retired the number 51 worn by Ichiro Suzuki, following his induction into the National Baseball Hall of Fame in July. This was the fourth number retired by the team. The Mariners played in the MLB Little League Classic on August 17, losing to the New York Mets.

The Mariners clinched a postseason berth for the first time since 2022 on September 23, with a victory over the Colorado Rockies. The next night, the team won the AL West division for the fourth time in franchise history.

The Mariners defeated the sixth seed Detroit Tigers in the AL Division Series (ALDS). With their win in Game 2, the Mariners won their first home postseason game since Game 5 in the 2001 ALDS. The Mariners won the series in 5 games, reaching the AL Championship Series for the first time since 2001, where they faced the Toronto Blue Jays. Despite winning three of the first five games, the Mariners squandered 2–0 and 3–2 series leads, losing in Game 7 after allowing a go-ahead home run to George Springer. The Mariners extended their drought of never winning the AL pennant.

The Seattle Mariners drew an average home attendance of 31,333, the highest of all baseball teams from Washington.