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May 19: 2B Jorge Polanco (right hamstring tightness) sidelined for fifth straight game; OF Jonatan Clase joins Major League squad
Seattle's second baseman completed some explosive running drills on the field ahead of Sunday's series finale in Baltimore, but he's still not 100% moving around on the field, Mariners manager Scott Servais said.

It sounds like the Mariners will make a final decision on an IL stint by Monday in New York, where the club opens a four-game series against the Yankees. The presence of Clase (Seattle's No. 10 prospect by MLB Pipeline) in the visiting clubhouse on Sunday morning indicated as such.

"He is feeling better," Servais said. "That's why we are holding off as long as we can to try to avoid the IL situation. He feels good swinging the bat."

Polanco has been out since exiting early against the Royals on Monday. 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. In his stead, Josh Rojas has started at second base.

May 19: SS J.P. Crawford (right hand swelling) could join Mariners in New York
Seattle's shortstop began throwing and swinging on Saturday in Seattle, and it's possible that he joins the Mariners at some point during their four-game series in New York, which runs from Monday through Thursday.

Crawford was hit by a pitch on his right hand during what was presumably going to be his final rehab game with Triple-A Tacoma on Wednesday night. Despite the setback, the prognosis is better than what the Mariners initially feared, as Crawford appears to not have sustained a significant follow-up injury to the right oblique strain that's sidelined him since April 24.

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10-DAY/15-DAY INJURED LIST

SS J.P. Crawford (right oblique strain)
Expected return: Potentially during this road trip
Seattle's shortstop experienced a setback during his Minor League rehab assignment on May 15 when taking a hit-by-pitch off his right hand in what was likely going to be his final tune-up game. He appears to have avoided a significant injury, but it prevented him from joining the team in Baltimore when it began a three-city, 10-game road trip. He began throwing and swinging in Seattle on May 18, and it's possible he joins the team in New York, during the Mariners' four-game series against the Yankees.

Crawford has been out since sustaining 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 19)

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 joined the Major League team to continue his rehab, shifting from the club's Spring Training facility in Arizona. He's been throwing up to 90 feet and with more intensity, but he said on May 17 that he's still a few weeks away from throwing his first bullpen session, targeting early June. 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. He experienced another setback in early May that prolonged his recovery into the July range. (Last updated: May 17)

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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