Miles Mastrobuoni Stats & Bio | Mariners Third Base

About Miles Mastrobuoni

Miles Mastrobuoni brings versatility and determination to the Seattle Mariners, wearing number 21 at third base. Born on October 31, 1995, in San Ramon, California, Mastrobuoni developed his baseball foundation before honing his skills at the University of Nevada. Standing 5'10" and weighing 185 pounds, he exemplifies the scrappy, hard-nosed player who maximizes every opportunity at the plate and in the field. His recent performances have been nothing short of electrifying, posting a remarkable .750 batting average with 1 home run and 4 RBIs across just 2 games, demonstrating his ability to deliver when it matters most. Mastrobuoni's journey from the California Bay Area to professional baseball reflects his relentless work ethic and passion for the game. He continues to be a compelling presence in the Mariners lineup.

Updated: Mar 14, 2026