Luke Raley Out At Least Six Weeks; Mariners Select Rhylan Thomas

12:55pm: Raley will be sidelined for at least the next six weeks, general manager Justin Hollander announced to the Mariners beat (link via Adam Jude of the Seattle Times). Raley suffered the strain during batting practice yesterday.

12:25pm: The Mariners announced Wednesday that they’ve designated right-hander Sauryn Lao for assignment and selected the contract of outfielder Rhylan Thomas from Triple-A Tacoma. Thomas will take the active roster spot of outfielder Luke Raley, who is headed to the 10-day injured list due to a right oblique strain.

Raley’s injury comes at a particularly poor time. The 30-year-old slugger has been in the process of shaking off a dreadful early slump — like the majority of Seattle’s offense — and had heated up with a .273/.419/.424 output over his past 43 trips to the plate. Even while he was slumping early on, Raley maintained a patient approach and is now up to 10 free passes on the season. His 11.9% walk rate is nearly double that of the 5.9% he posted in 2024, and he’s also posting career-best batted-ball metrics (91.6 mph average exit velocity, 49% hard-hit rate).

Raley becomes the second Mariners right fielder lost to the injured list before the calendar even flips to May. He’d already shifted from first base to right field to cover for the injured Victor Robles, who’s out until midseason.

Thomas, 25, came to the Mariners last summer in the trade sending reliever Ryne Stanek to the Mets. The former 11th-round pick has enjoyed a terrific start to his season in Tacoma, slashing .319/.363/.362 in 104 plate appearances. He’s always posted low strikeout rates in the minors but has taken his hit tool to new heights in 2025, fanning just four times so far (3.8%). Thomas has never hit for power and has only one round-tripper and one double on the current season, but he’s 6-for-9 in stolen base attempts. He’ll give the Mariners some speed in the outfield mix and the type of high-contact bat the team has lacked in recent seasons.

Thomas, Samad Taylor and Miles Mastrobuoni all figure to see time in the outfield while Raley is out. Utilityman Dylan Moore would’ve been an option as well, but he just landed on the injured list this week due to shoulder inflammation. The M’s will go with a patchwork group for the time being, although given the length of Raley’s absence and the typically active nature of Seattle’s front office — this past offseason notwithstanding — it stands to reason that the Mariners could add to that mix via waivers, free agency or a small trade. True difference-making regulars aren’t likely to be available until closer to July’s trade deadline, but there are veterans on minor league deals and fringe big league outfielders who’ll be designated for assignment throughout the course of Raley’s IL stint.

The 25-year-old Lao was only selected to the big league roster last week. He made his MLB debut with the M’s on April 22 and pitched 1 2/3 scoreless innings with three strikeouts. He was optioned back to Tacoma shortly thereafter.

Lao originally signed out of the Dominican Republic with the Dodgers and spent the first four seasons of his career as an infielder. He moved to the mound in 2023 and hasn’t looked back. The 6’2″ righty has a career 3.61 ERA in 122 minor league frames, including a 2.25 mark in 12 Triple-A innings this season. Lao doesn’t have the glaring command troubles displayed by so many former position players who transition to the mound; he’s walked only 6.5% of his minor league opponents against a robust 26.6% strikeout rate.

Lao is averaging a pedestrian 92.9 mph on his four-seamer in Triple-A and sat at just 90.7 mph with the pitch in his lone MLB appearance, which could work against him, but Lao has a solid (if brief) track record on the mound and a full slate of minor league options remaining. The track record and slate of options could appeal to another club. The Mariners will have five days to trade Lao or place him on outright waivers. If he hits waivers, that’d be a 48-hour process, meaning the maximum length of his DFA window will be one week.