Miles

Mastrobuoni

The versatile 30-year-old will get another chance to show what he can do at the MLB level with Julio Rodriguez heading to the 7-day concussion injured list on Friday. Mastrobuoni has hit .217 (5-for-23) with zero homers and one RBI in 27 plate appearances with the Mariners this season.

Mastrobuoni was designated for assignment by the Mariners on Friday, and the versatile left-handed hitter was not claimed nor traded. It wouldn’t be a huge surprise if Seattle added Mastrobuoni back to the roster at some point, but he’ll need to be added to the 40-man roster in order for that to happen.

The 30-year-old infielder hit just .217 (5-for-23) with no homers and one RBI in 27 plate appearances over eight games with the M’s. He could pique another team’s interest on waivers.

Naylor receives some extra time off to rest and recover as he battles a lingering wrist issue. The 28-year-old slugger also fouled a ball off his shin over the weekend, which didn’t help matters. It’ll be Miles Mastrobuoni taking over at first base in his absence. All indications have been that Naylor will be ready to return to Seattle’s lineup at some point this week.

Mastrobuoni returns to Seattle’s bench mix as a versatile multi-position specialist after missing the first 10 weeks of the season recovering from a calf strain that he suffered while playing in the World Baseball Classic.

The procedural move opens up a spot on Seattle’s 40-man roster. Mastrobuoni has been on the shelf since suffering a calf strain while playing in last month’s World Baseball Classic.

Mastrobuoni wasn’t originally in line to make the Mariners, though he might have gotten a spot with J.P. Crawford down. Instead, he’ll join Crawford on the IL. Mastrobuoni hit .250/.324/.298 in 175 plate appearances over 76 games last season.

No word yet on the severity. However, with Seattle’s season-opener roughly two weeks away it’s possible he’ll require a trip to the injured list. The versatile 30-year-old’s absence could potentially open the door for sizzling-hot former top prospect Brennan Davis to win a spot on the club’s Opening Day roster.

He also doubled. Mastrobuoni took Hayden Birdsong deep to give the Mariners a 5-0 lead in the first inning. It’d be the last run Seattle would score. Mastrobuoni provided versatility off the bench in 2025, but he’s not a lock to make the roster to open 2026.

Woo’s return provides a massive lift for Seattle’s rotation mix for the best-of-seven series against Toronto after missing the ALDS recovering from pectoral inflammation. It’s unclear when he’ll take the ball during the extended series, but Mariners manager Dan Wilson should provide an update at some point prior to Game 1. The 25-year-old ace posted a spectacular 2.94 ERA across a career-high 186 2/3 innings over 30 starts during the regular season. The only other changes for the Mariners involve versatile Miles Mastrobuoni joining their bench mix with Luke Raley and rookie Ben Williamson being left off.