The Mariners have shut relievers Matt Brash and Gregory Santos down from throwing for the time being, reports Ryan Divish of the Seattle Times. Neither the team nor Brash would get into specifics regarding his injury, but Divish notes that the M’s don’t believe it to be a serious issue. Brash simply told Divish that he’s “banged up” and “didn’t feel great” after his most recent bullpen session. GM Justin Hollander added that the organizational hope is for Brash to resume a throwing progression next week. Santos, meanwhile, is dealing with some discomfort near his teres major muscle that popped up during his most recent ’pen session. There’s no specific timetable for his return to throwing.
While the team hasn’t yet conveyed significant concerns on either player, both should be watched with a keen eye. Brash quietly emerged as one of the most dominant setup men in the league last season. His 3.06 ERA in 70 2/3 innings is impressive on its own, but that masks a sensational four-month run to close out the season.
Brash posted strong secondary marks but pedestrian run-prevention numbers in the season’s first two months. But from Memorial Day weekend onward, the righty delivered a 2.36 ERA with a 32.4% strikeout rate and 9.7% walk rate. Brash averaged a blazing 98.2 mph on his heater in 2023, saved four games and picked up another 24 holds. He’s expected to be the primary setup man for closer Andres Munoz and is slated for regular high-leverage work; even an absence of moderate length would be a sizable blow for the M’s.
That’s also true of Santos, whom the Mariners just acquired from the White Sox earlier this month (in a trade sending outfielder Zach DeLoach, righty Prelander Berroa and a Competitive Balance draft pick back to Chicago). The Sox’ acquisition of Santos from the Giants flew under the radar last offseason, but he’d pitched his way into the likely closer’s role on the South Side before being flipped to Seattle. Santos pitched 66 1/3 innings in 2023, posting a sharp 3.39 ERA with a 22.8% strikeout rate, 5.9% walk rate and 52.5% grounder rate while averaging 98.8 mph on his fastball. ERA alternatives like FIP (2.65) and SIERA (3.32) generally support his unexpected breakout as an impact reliever.
The team will presumably have updates on both relievers in the days ahead, but they’re critical cogs in manager Scott Servais’ setup corps. The Mariners have a strong bullpen and are generally adept at turning low-profile pickups into successful bullpen arms, but overcoming the loss of both pitchers would be a tall order.
Unfortunately for the Mariners, Brash and Santos aren’t the only ones banged up. Third baseman Luis Urias isn’t throwing for the time being after experiencing some shoulder inflammation while playing winter ball in his native Mexico this offseason, via MLB.com’s Daniel Kramer. The team believes it’ll be a short-term issue, but there’s still no clear timetable as to when he’ll begin throwing.
Urias, 26, struggled to a dismal .199/.307/.299 slash in 177 plate appearances with the Brewers and Red Sox last year but slashed .244/.340/.426 in 1042 plate appearances with Milwaukee from 2021-22. He’s also a career .276/.353/.442 hitter against lefties. A healthy Urias would be a fine option in the short half of a platoon at either third base or second base, although the acquisition of Polanco at second base paints third base as the obvious place for the Urias/Rojas platoon.
If Urias misses any time or is at all delayed to start the season, Seattle could just stay in-house and give fellow righty-swinger Dylan Moore some platoon work at the hot corner. Moore hasn’t been as good against lefties as Urias, however, and putting him in that role would thin out the team’s bench depth, perhaps paving the way for Sam Haggerty or Samad Taylor to crack the roster. The M’s could also just go with Rojas on an everyday basis at third; he has near-identical splits throughout his career.
Kramer also notes that right-hander Cole Phillips, the 2022 second-rounder acquired from the Braves in the Jarred Kelenic deal, recently underwent his second Tommy John surgery. Phillips also underwent the procedure during his senior year of high school in 2022, just months before the draft. He’d been trending up as a potential first-round pick before blowing out his elbow in ’22 and has yet to throw a pitch in the pros while rehabbing that injury. Unfortunately, his debut will now be delayed even further. Phillips won’t turn 21 until May, so there’s plenty of time for him to get back on track and develop into a contributor for the Mariners, but a pair of Tommy John procedures prior to a pitcher’s 21st birthday is as ominous as it gets for a pitching prospect.
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