The Mariners' roster is effectively set with the return of Jorge Polanco. Here's what it means for Seattle's infield mix.

The Seattle Mariners have been shopping starting pitcher Luis Castillo this winter. Are the San Francisco Giants a realistic ...

The Mariners are cornering the market on right-handed pitchers named Luis Castillo. Seattle reached a Minor League deal with ...

Most will defer to the Seattle Mariners pitcher—an All-Star in 2019, 2022 and 2023, and a Cy Young-caliber hurler in the most ...

Castillo came up in the Arizona Diamondbacks system and signed with the Tigers as a minor-league free agent before the 2022 ...

Reds shortstop prospect Edwin Arroyo missed all of last season after suffering a shoulder injury during spring training.

The Seattle Mariners' 2025 roster needs more offense to compete for a postseason berth. Could Toronto Blue Jays shortstop Bo ...

Nets NRI deal from Seattle ...

Two notable relief pitchers were traded this week, as Ryan Pressly was dealt from the Astros to the Cubs and Taylor Rogers ...

Ask baseball fans, as a thought exercise, to describe who they think of when they hear the name "Luis Castillo." Most will defer to the Seattle Mariners pitcher—an All-Star in 2019, 2022 and ...

Veteran hurler Luis Castillo has been the subject of trade rumors this winter. Could Seattle ship him to the Toronto Blue Jays in exchange for shortstop Bo Bichette? Castillo has been a consistent ...

Sports Illustrated's Nick Ziegler suggested a trade that would bring Luis Castillo from the Seattle Mariners to Baltimore. "With options in free agency being limited at this point, one pitcher who ...