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May 14: DH Mitch Garver dealing with back spasms
The veteran was pulled roughly 45 minutes before first pitch due to upper back spasms, manager Scott Servais revealed after Seattle's 4-2 loss to Kansas City. The issue is different than the one that sidelined Garver for three games just after Opening Day, which was in his lower back.

In Garver's stead, Mitch Haniger moved to designated hitter, Luke Raley moved from left to right field and Sam Haggerty was installed in left. Garver is hitting .174/.287/.347 (.634 OPS) in his first season in Seattle, but he'd been on a better run lately with an .815 OPS in May.

May 14: 2B Jorge Polanco (right hamstring tightness) out of the lineup
Seattle's second baseman was out of the lineup one day after exiting early, though he said in passing that he's feeling better and that the rest is precautionary. Polanco said he sustained the injury when scoring from second base on an RBI single by Luke Raley in the third inning of Monday's win. He remained in the game until the top of the sixth, when he was pulled for a defensive replacement.

Off to a slow start in Seattle, hitting .192 with a .606 OPS, Polanco was limited to just 80 games last year with Minnesota due to left knee inflammation and a left hamstring strain, the latter of which was all the more reason he wanted to get ahead of the issue on Monday.

In his stead, Josh Rojas started at second base.

May 14: INF Jake Slaughter acquired from Cubs in exchange for RHP Tyson Miller
Seeking some offensive depth in the upper Minors, Seattle acquired Slaughter for the reliever Miller, who was designated for assignment on Friday.

The 27-year-old Slaughter (an 18th-round pick by the Cubs in the 2018 Draft) was batting .297 with five homers, 17 RBIs and an .878 OPS in 32 games with Triple-A Iowa this season. The Mariners admire his defensive versatility, as he had started five games at first base, 18 at second and seven at third.

Miller appeared in nine games with the Mariners and surrendered four earned runs in 11 2/3 innings (3.09 ERA) with one walk and 12 strikeouts after being selected from Triple-A Tacoma on April 8. Chicago was in need of bullpen reinforcements, with five relievers on the IL.

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10-DAY/15-DAY INJURED LIST

SS J.P. Crawford (right oblique strain)
Expected return: Weekend of May 17
Seattle's shortstop began a Minor League rehab assignment with Triple-A Tacoma on May 14. He's been taking part in full pregame workouts in Seattle throughout the club's homestand, with the rehab assignment representing his final hurdle. If all goes well, he'll likely be activated when the club begins a three-city road trip starting on May 17 in Baltimore. Crawford sustained a right oblique strain when taking what he described as an "awkward" swing during the late rounds of batting practice on April 24, after which an MRI exam revealed a Grade 1 severity. (Last updated: May 14)

OF Dominic Canzone (left AC joint sprain)
Expected return: Weekend of May 17
Canzone has been hitting the ball hard on a Minor League rehab assignment with Triple-A Tacoma and could return to action when Seattle begins its next road trip the weekend of May 17. Canzone suffered the injury during Seattle's April 14 game against the Cubs after crashing into the left-field wall while making a remarkable catch. (Last updated: May 13)

LHP Tayler Saucedo (right knee hyperextension)
Expected return: Late May
The MRI that he underwent after suffering the injury on May 7 "was overall positive," Mariners general manager Justin Hollander said, adding that the injury doesn't appear as severe as it looked when the lefty went down. Saucedo and the club are now awaiting the soreness to subside before they map out a rehab, but they're optimistic that he'll only need the 15-day stint. Saucedo suffered the injury running to cover first base on a ground ball but stumbled awkwardly after stepping on the bag. (Last updated: May 10)

60-DAY INJURED LIST

RHP Gregory Santos (right lat strain)
Expected return: July at the earliest
Santos recently experienced a setback that forced him into a "three-or-four-day shutdown" and another MRI, Mariners general manager Justin Hollander said. Santos then re-started his throwing program, back at the 60-feet range, which pushed his timeline back into July, from the late-May, early-June range that the Mariners were hopeful for. He's expected to transition his rehab from Arizona to Seattle. Santos initially experienced shoulder soreness at the start of Spring Training and was set back by a lat strain during a bullpen session while ramping back up. (Last updated: May 10)

RHP Matt Brash (right elbow inflammation)
Expected return: June 2025
Brash underwent Tommy John surgery on May 8 that ended his 2024 season, three months after initially experiencing soreness during his second bullpen session in Spring Training. Brash had the ulnar collateral ligament in his pitching elbow repaired and a brace installed, which has typically allowed patients to begin physical therapy sooner. That's why the Mariners are hopeful Brash can return in 12 months, potentially as soon as June 2025. (Last updated: May 10)

RHP Jackson Kowar (right UCL surgery)
Expected return: 2025
Kowar was transferred to the 60-day IL shortly after receiving word that he'll need to undergo Tommy John surgery, which ended his season before it even began. The former first-round Draft pick was among the leading candidates to win a bullpen spot before suffering the injury in his second Cactus League outing. (Last updated: March 10)

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