Seattle Mariners infield prospect Michael Arroyo put on a show in his first spring training game of 2026, hitting a home run and double.

There were plenty of solid takeaways from the win, including the standout performances of Michael Arroyo and Cooper Criswell, but there was also something else positive that stood out to manager Dan Wilson: The impactful return of Luke Raley.

The Mariners jumped out to a 5-0 lead in the first inning, but wouldn't score again as the Giants' rally was aided by the cloudless day.

Considered a long shot to make the Major League roster, Miles Mastrobuoni homered against the San Francisco Giants on Saturday, as he tries to catch the eyes of the coaching staff

The lid has been lifted, and the Mariners are off and running in Cactus League play. Seattle opened its 31-game Spring Training slate on Friday against the Padres, their neighbors at the Peoria Sports Complex.

Mariners' catcher Mitch Garver gives insight on Cal Raleigh's 60-homer season. Scott Pianowski begins his series of 2026 fantasy baseball rankings tiers starting with the catcher position. Scott Pianowski previews the catcher position for 2026 fantasy baseball with his top players to target and fade this season.

Aside from drafting, developing, and trades, Seattle sportswriter and broadcaster Mike Salk says that the M's ability to RETAIN their homegrown stars is a huge plus