The Mariners designated Kowar (shoulder) for assignment Tuesday.

The 29-year-old righty will give up his place on Seattle's 40-man roster for Jhonny Pereda, who was acquired from the Twins on Tuesday. Kowar made 15 regular-season appearances for the Mariners in 2025 and finished the year with a 4.24 ERA and 1.24 WHIP over 17 frames before a right shoulder impingement ended his season in mid-August.

The Yankees claimed Hamel off waivers from the Rangers on Tuesday.

Hamel made one appearance for the Mets in 2025 and spent the rest of the year at Triple-A Syracuse, posting a 5.32 ERA and 75:22 K:BB over 67.2 innings. The 26-year-old will compete for a spot in the Yankees' bullpen but does have minor-league options remaining.

The Rays signed Booser to a minor-league contract Monday.

Booser was non-tendered by the White Sox earlier this offseason after finishing with a 5.52 ERA, 1.52 WHIP and 35:19 K:BB over 31 innings during the 2025 campaign. The Rays will retain control of the lefty reliever through the 2030 season.

The Rockies signed Weigel to a minor-league contract Tuesday, Will Sammon of The Athletic reports.

Weigel is coming off a terrific performance in the Dominican Winter League, having posted a 1.19 ERA and 34:5 K:BB over 30.1 innings. The 31-year-old has not pitched in the majors since 2021, having bounced around between the minors and independent ball since then. Weigel is likely ticketed for Triple-A Albuquerque to begin the 2026 season.

The Angels signed Sandlin (elbow) to a minor-league contract Monday that includes an invitation to spring training, Jeff Fletcher of The Orange County Register reports.

Sandlin was limited to only 19 appearances in 2025 for the Blue Jays due to elbow trouble, with the last of those outings coming before the All-Star break. It's unclear whether he will have restrictions in spring training, but Sandlin boasts a career 3.19 ERA and 27.3 percent strikeout rate, so he'll have a good shot to make the Opening Day roster, if healthy.

Atlanta designated Soriano for assignment Monday.

The transaction frees up a spot on the 40-man roster for the addition of Jose Suarez, who was claimed off waivers. Soriano was a waiver claim of Atlanta himself earlier this month and now could be on the move again. The right-handed reliever has collected a 5.95 ERA and 117:55 K:BB covering 118 innings across parts of three seasons in the big leagues.

Kimbrel signed a minor-league contract with the Mets that includes an invitation to spring training, Jon Heyman of the New York Post reports.

Kimbrel spent time with Atlanta and Houston in 2025, appearing in 14 MLB games and posting a 2.25 ERA, a 1.42 WHIP and a 17:7 KBB across 12 innings. Entering his age-38 season, Kimbrel will get an opportunity with the Mets, but he may need a strong showing during spring training in order to earn a place on the Opening Day roster.

Coleman signed a minor-league contract with the Yankees on Jan. 17.

Coleman made 11 appearances in the Orioles' minor-league system last season, posting a 4.91 ERA and 1.84 WHIP over 14.2 innings between Double-A and Triple-A before being released in mid-May. He'll get a chance to bounce back with the Yankees but doesn't project as anything more than organizational depth.

The Mariners designated Diaz for assignment Friday, Adam Jude of The Seattle Times reports.

With Cooper Criswell coming over from the Mets in a trade, Diaz will give up his place on the Mariners' 40-man roster. The 29-year-old southpaw made just one appearance with the Mariners near the start of the 2025 regular season, allowing one hit and striking out one batter over 1.1 innings. He spent the rest of the season at Triple-A Tacoma and turned in a 4.15 ERA and 1.32 WHIP across 138.2 frames.

The Mets traded Criswell to the Mariners on Friday in exchange for cash, Jorge Castillo of ESPN.com reports.

The 29-year-old was DFA'd by the Mets on Wednesday following the team's acquisition of Freddy Peralta and Tobias Myers, but Criswell will recapture a 40-man spot upon moving to Seattle. He posted a 3.57 ERA and 1.58 WHIP in 17.2 regular-season innings with the Red Sox in 2025 and will compete for a spot in the Mariners' bullpen during spring training.