De Los Santos (knee) is expected to begin throwing bullpen sessions sometime next week, Matt Kawahara of the Houston Chronicle reports.

De Los Santos has been shut down from throwing since he suffered a right knee strain at the start of camp. It remains unknown how far away he is from pitching in Grapefruit League games, though the Astros will likely also have the 30-year-old reliever face live hitters before using him in a competitive setting.

Manager Alex Cora said Saturday that Gamboa is dealing with an elbow injury and will be shut down for at least three days, Mac Cerullo of the Boston Herald reports.

Gamboa has made just one appearance so far this spring, during which he gave up two earned runs on two hits and a walk across 1.1 innings. His injury doesn't seem to be anything major, but the Red Sox will shut him down temporarily to be safe.

Pepiot allowed one unearned run on one hit and two walks in two innings during Friday's Grapefruit League game against Toronto. He struck out two.

Pepiot showed some signs of rust in his first spring outing, throwing just 19 of his 32 pitches for strikes. The right-hander's fastball velocity topped out at just 94.6 mph as well after averaging 95.2 mph in 2025, so he'll be looking to round into form in the coming weeks. Though he did manage a strong 3.41 ERA and 1.12 WHIP across 16 home starts at hitter-friendly Steinbrenner Field last regular season, Pepiot is still likely looking forward to the Rays moving back to pitcher-friendly Tropicana Field in 2026.

Kolek has been diagnosed with a Grade 1 left oblique strain, Anne Rogers of MLB.com reports.

As Rogers reported Thursday, Kolek will be shut down for at least the next week before the next steps in his recovery are mapped out. The right-hander is competing for a spot in Kansas City's rotation this spring.

Tigers manager A.J. Hinch said Friday that Brieske is day-to-day with thoracic spine inflammation, Chris McCosky of The Detroit News reports.

Brieske was injured during fielding drill this week and was unable to pitch in Thursday's Grapefruit League contest against Baltimore. The right-hander appeared in 22 regular-season games for the Tigers in 2025, registering a 6.55 ERA, 1.64 WHIP and 16:12 K:BB across 22 innings. He's competing for a role in the bullpen.

Rays manager Kevin Cash said Friday that Wilson is dealing with back issues and will not be ready for Opening Day, Marc Topkin of the Tampa Bay Times reports.

Wilson missed significant time during the 2024 season with the White Sox due to back problems, though it's not clear whether this is a recurrence of those issues. The veteran reliever was acquire via trade this offseason and has yet to appear in a Grapefruit League contest. Expect Wilson to begin the year on the IL, with no clear target date yet for his season debut.

Crochet allowed one hit and one walk over two scoreless innings in Thursday's spring start against the Rays.

Crochet made his Grapefruit League debut, throwing 23 pitches (14 strikes) in his first step on the way to an Opening Day start. Other than a lack of strikeouts, it was an unremarkable outing for the left-hander, who led the majors in 2025 with 255 punchouts. He used most of his repertoire, including a splitter he'd like to use more of in 2026.

Lopez (elbow) has begun throwing live batting practice within the past week, Martin Gallegos of MLB.com reports.

Lopez has yet to make his debut in the Cactus League this year after ending the 2025 campaign on the injured list with a strained left elbow. The 27-year-old lefty doesn't seem to have suffered any setbacks in his recovery, but the team is still playing it safe and building him up slowly this spring. If all goes according to plan, he'll get his first taste of spring action against the Dodgers on March 8 and figures to open the regular season in the Athletics' rotation.

Tigers manager A.J. Hinch said that Brieske didn't pitch in Thursday's game versus the Orioles as anticipated due to soreness in his side, Chris McCosky of The Detroit News reports.

Hinch said that Brieske hurt himself during a pitchers' fielding practice drill. The skipper does not believe the injury is serious, but he did not offer a guess as to when Brieske might be available to pitch in games. The right-hander is projected for a middle-relief role in Detroit this season.

Kolek has been diagnosed with a left oblique strain and will be sidelined for at least the next 5-to-7 days, Anne Rogers of MLB.com reports.

As Rogers notes, Kolek could be sidelined even longer if his Thursday scans reveal the injury is more severe. Kolek felt his side grab while warming up in the bullpen during Wednesday's Cactus League bout with the Mariners. Kolek is competing for a spot in Kansas City's rotation this spring after he was acquired from the Padres at the trade deadline last summer.