Miles Mastrobuoni

30-Year-Old Third Baseman3B

Seattle Mariners

2025 Stats

AVG

.250

RBI

2026 Projections

AVG

RBI

Unlock Our Projections

2026 Fantasy Outlook

Mastrobuoni is a replacement level utility player who is out of minor-league options. The Mariners lack established options at third base and second base, but they have young players who have more ceiling than the 30-year-old Mastrobuoni and a comparable floor. When Mastrobuoni is in the lineup, the one category he assists in is steals, having stolen 13 bases in 61 games in 2023 and six bases in 76 games in 2025. He has two homers and a .231 average in 195 career games. It's possible he will be designated for assignment if Colt Emerson wins an Opening Day roster spot. Read Past Outlooks

Total

Loading Stat Totals...

vs Pitcher

Loading vs Pitcher Splits...

Location/Time/Surface

Loading Location/Time/Surface Splits...

Situation

Loading Situation Splits...

Count

Loading Count Splits...

Opponent

Loading Opponent Splits...