Baseball’s Back: Five Notes from Mariners’ First Spring Training Action of 2026

With blue skies above and many excited fans all around in that picturesque Cactus League ballpark, the Seattle Mariners played their first game of 2026 Spring Training on Friday, Feb. 20. The first day of spring is perhaps the most hopeful time for all 30 teams in any given year, with a nearly clean slate injury-wise and the first harsh reality checks of the regular season still a month and change away.

A quite packed house of 9,956 spectators dotted the Peoria Sports Complex to see the Mariners and Padres both take to their home Spring ball yard. They saw prospects go up against powerhouses in exciting duels and yet also witnessed players trip over each other, lose cans of corn in the sun, and make Little League errors in base coverage. No one got hurt and the game doesn’t count, so both sides came away with a smile in a 7-4 win for Seattle. But what does the first preseason action of 2026 tell us about how things might go when real chips are down for the Mariners?

Michael Arroyo put on a good display at the dish, with a homer and double to power early Seattle production.

Seattle’s system has a fair amount of top-end hitting prospects, and although Colt Emerson and Lazaro Montes headline the system, the crown in Peoria bore witness to another of Seattle’s guys in the farm system. Michael Arroyo, who struggled a bit with his power after his promotion to Double-A in 2025 with a .255/.376/.341 slash line (though this was still a 121 OPS+ where 100 is league average) - and yet decreased his strikeout rate against better pitchers - went into Spring with the chance to show what exactly the Mariners have with him.