Skip to main content
Skip to navigation
ESPN
Football
Football
NFL
NFL
NBA
NBA
F1
F1
Rugby
Rugby
MMA
MMA
Cricket
Cricket
MLB
MLB
More Sports
More Sports
Disney Plus
Fantasy
Fantasy
Search
Miles
Mastrobuoni
Seattle Mariners
#21
Third Baseman
HT/WT
1.75 m, 83 kg
Birthdate
31/10/1995 (30)
BAT/THR
Left/Right
Birthplace
San Ramon, CA
Status
60-Day IL
Overview
News
Stats
Bio
Splits
Game Log
Switch Player
Arizona Diamondbacks
Athletics
Atlanta Braves
Baltimore Orioles
Boston Red Sox
Chicago Cubs
Chicago White Sox
Cincinnati Reds
Cleveland Guardians
Colorado Rockies
Detroit Tigers
Houston Astros
Kansas City Royals
Los Angeles Angels
Los Angeles Dodgers
Miami Marlins
Milwaukee Brewers
Minnesota Twins
New York Mets
New York Yankees
Philadelphia Phillies
Pittsburgh Pirates
San Diego Padres
San Francisco Giants
Seattle Mariners
St. Louis Cardinals
Tampa Bay Rays
Texas Rangers
Toronto Blue Jays
Washington Nationals
Pitcher
Catcher
Infielder
Outfielder
Designated Hitter
Connor Joe
#9
Josh Naylor
#12
Leo Rivas
#76
Cole Young
#2
Will Wilson
#7
J.P. Crawford
#3
MLB Quick Links
Scores
Table
Schedule
Mariners
MLB
Mariners' Crawford, Miller starting season on IL
1M
Steven Bisig-Imagn Images
MLB
Bichette off Jays' ALCS roster; Woo back for M's
6M
Jorge Castillo
Icon Sportswire
MLB
Cubs trade infielder Mastrobuoni to Mariners
1Y
Keith Gillett/Icon Sportswire
Cubs
MLB
Cubs' Hoerner ends up on IL with hammy strain
3Y
Associated Press
Ohtani hits 102 mph, leads Japan into WBC semis
3Y
AP Photo/Toru Hanai
Back to Top
MLB News
Fantasy baseball forecaster: Team hitting ratings
Stay ahead of the game and optimize your fantasy baseball hitters with our forecaster, which provides a rolling 10-day outlook of every team's hitting matchups as well as the potential for stolen bases.
Fantasy baseball forecaster: Pitcher projections for the next 10 days
Keep up to date on who is pitching -- and how well they're expected to do -- with our forecaster, which provides a rolling 10-day outlook of every team's probable starting pitchers with game score projections.
Fantasy baseball prospect watch: Is Cleveland ready for a new catcher?
All the prospects fantasy managers should be keeping an eye on as the season continues to move through its first month.
MLB 2026: Inside the rise of 100 mph pitching velocity
Hitting 100 mph on the radar gun is a badge of honor. Here's why the number of pitchers who have reached it has exploded.
Astros face the Guardians leading series 1-0
Houston Astros (9-15, fifth in the AL West) vs. Cleveland Guardians (13-11, first in the AL Central)
Cortes leads Athletics against the Mariners after 4-hit performance
Athletics (12-11, first in the AL West) vs. Seattle Mariners (10-14, fourth in the AL West)
