The Seattle Mariners have released their full 2027 regular-season schedule, with Opening Day set for March 25 at T-Mobile Park against the Boston Red Sox. The matchup marks the earliest traditional Opening Day in Major League Baseball history.
The Mariners will begin the season with a seven-game homestand before heading out on their first road trip. Their regular season concludes on the road against the Athletics in Sacramento.
The 2027 schedule also features matchups against every MLB team, key divisional rivalries, and the league’s annual Rivalry Weekend following the All-Star break.
However, the start of the season is not guaranteed. The current Collective Bargaining Agreement expires before the 2027 campaign, and ongoing negotiations between Major League Baseball and the MLB Players Association could affect the schedule if a new labor deal is not reached.
