Kowar (elbow) was placed on the 60-day injured list Sunday, Daniel Kramer of MLB.com reports.

The right-hander missed all of last season after undergoing Tommy John surgery in March, and it's not a major surprise he'll be unavailable for at least the first two months of the 2025 season. Kowar has been throwing bullpen sessions and could be ready to face live batters before the end of spring training.

The Mariners claimed Martinez off waivers from the Marlins on Sunday, Daniel Kramer of MLB.com reports.

Seattle will be Martinez's fourth team of the offseason after he finished the 2024 campaign with Houston. The 30-year-old made 44 regular-season appearances for the Astros last season and had a 3.59 ERA, 1.27 WHIP and 36:18 K:BB across 52.2 innings.

Martin (illness) is listed as one of the relievers scheduled to pitch for the Rangers in Sunday's Cactus League game against the Diamondbacks, Shawn McFarland of The Dallas Morning News reports.

The veteran right-hander will be making his spring debut after a bout with the flu earlier in camp put him behind schedule compared to the club's other healthy bullpen options. Martin will likely need only a handful of tuneup outings during the Cactus League to prepare himself for the beginning of the season. He'll be a candidate to factor into the Rangers' unsettled closing picture after he turned in a 3.45 ERA, 1.13 WHIP and 50:3 K:BB in 44.1 innings with Boston in 2024.

The Angels optioned Mederos to Triple-A Salt Lake on Sunday.

Mederos is entering his third season as a member of the Angels' 40-man roster, but he made just seven total appearances at the big-league level between the 2023 and 2024 campaigns and was facing an uphill battle to win a spot on the Opening Day roster. All seven of his big-league outings have come in relief, but the 23-year-old righty will likely work out of the rotation at Salt Lake to begin the upcoming season.

Orioles manager Brandon Hyde said Kittredge experienced left knee soreness while warming up in the bullpen prior to Saturday's 5-2 Grapefruit League loss to the Pirates, Andy Kostka of TheBaltimoreBanner.com reports.

Kittredge had been scheduled to make a relief appearance Saturday, but the knee issue prompted the Orioles to scrap those plans. Hyde categorized Kittredge's sore knee as a day-to-day concern, so the expectation is that the right-hander will be ready to go for Opening Day. After turning in a 2.80 ERA and collecting 37 holds over 70.2 innings with St. Louis in 2024 before signing a one-year, $10 million deal in the offseason, Kittredge is primed to handle a key late-inning role for Baltimore.

Orioles manager Brandon Hyde said that he's hopeful that Bautista (elbow) will make his Grapefruit League debut Monday versus the Red Sox, Jake Rill of MLB.com reports.

The Orioles will presumably wait and see how Bautista bounces back from his latest throwing session before locking him into Monday's pitching schedule, but up to this point, the right-hander has seemingly responded well to all of the bullpen and live batting practice sessions he's logged thus far in spring. Assuming he gets the green light to pitch Monday, Bautista will be making his first appearance in a game since August 2023, after he missed the entire 2024 season while recovering from Tommy John surgery. Now nearly 17 months removed from the procedure, Bautista should be on track to open the season as the Orioles' closer, provided he makes it through his spring appearances with no complications. Before suffering the elbow injury in 2023, Bautista had been one of baseball's top closers that season, turning in a 1.48 ERA, 0.92 WHIP and 110:26 K:BB while notching 33 saves in 39 chances over 61 innings.

The Orioles optioned Selby to minor-league camp Sunday, Matt Weyrich of The Baltimore Sun reports.

Selby finished the 2024 regular season on the Orioles' 28-man roster and made five total relief appearances in the majors between stops with Baltimore and Kansas City, tossing seven innings while allowing two earned runs on three hits and four walks. Though he retains a 40-man roster spot heading into 2025, Selby took himself out of contention for an Opening Day bullpen gig by giving up four earned runs and recording just two outs in his lone Grapefruit League appearance. He'll likely begin the upcoming season at Triple-A Norfolk.

Enright (lat) threw a bullpen session Saturday.

Enright was diagnosed with a low-grade lat strain in February, and Saturday marks his first time throwing off a mound since then. He still likely won't be ready to pitch in games until April, at which point he will presumably report to Triple-A Columbus.

Stephan (elbow) threw a bullpen session Saturday.

Saturday marks the first time Stephan has thrown off a mound this spring while he works his way back from UCL reconstruction surgery. He seems to be trending in the right direction but still has several boxes to check before being cleared for game action, which isn't likely to happen for another couple of months.

Garcia (forearm) is expected to make his Cactus League debut Monday, Shawn McFarland of The Dallas Morning News reports.

Garcia has been dealing with some irritation in his left forearm over the past few weeks, but he was able to get through a live session Thursday without any issues and is now cleared to return to a competitive setting. The 28-year-old turned in a 4.22 ERA and 1.19 WHIP alongside a 75:16 K:BB across 59.2 innings with the Nationals last season and is expected to handle high-leverage situations for Texas in 2025.