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 ...

The San Francisco Giants starting rotation took a brutal hit at the end of November when two-time Cy Young Award winner Blake Snell signed with the rival-Los Angeles Dodgers. It was a double whammy ...

Nets NRI deal from Seattle ...

Most of the Seattle Mariners offseason has been focused around fans and media members lamenting the team's financial ...

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 ...

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