During 2025 Spring Training, Seattle Mariners utility man Miles Mastrobuoni displayed versatility on the field playing multiple positions (3B, 2B, CF, and LF) and demonstrated his prowess at the plate (.429 batting average with three doubles, one triple, five walks, seven RBI, seven runs scored and one stolen base).

M’s manager Dan Wilson said, “There’s been a lot of guys that have had good springs. Mastrobuoni has been one of those guys that has put up some good at-bats and had some key RBIs for us late in games.” As a result, Miles was selected as one of 26 players on the 2025 Seattle Mariners Opening Day roster.