The Seattle Mariners are facing critical roster decisions ahead of Opening Day 2025, particularly regarding their infield and bullpen. President of Baseball Operations Jerry Dipoto and General Manager Justin Hollander have emphasized the need for infield improvements, while recent non-tenders have created gaps in the bullpen.

New minor league signings like Yunior Marte and Adonis Medina may compete for major league spots, alongside recovering pitchers Gregory Santos and Matt Brash. Notably, top prospect Brandyn Garcia, who excelled in the minors, could transition to a reliever role in 2025, adding intrigue to the Mariners' spring training.