Polanco will play at designated hitter on Monday as the M's take on the Cleveland Guardians, marking his first action of the spring.

Mariners top prospect Colt Emerson doesn't have a hit this spring. But a 14-pitch at-bat Sunday could be a defining moment.

The Seattle Mariners have seven of baseball's top prospects. Getting a couple to the big-league club would help in 2025 — with an eye to all arriving in the future.

We are still three-plus weeks away from Opening Day and the Mariners have begun the process of trimming their camp roster, sending some players to minor league camp and releasing right-handed pitcher Dauris Valdez.