MLB Player News

The Rays recalled Grove from Triple-A Durham on Monday.

Grove will give the Rays a fresh arm to round out their bullpen after Craig Kimbrel was designated for assignment and Alex Cook was optioned to Triple-A earlier Monday to create room on the roster for the club's recent trade additions. The right-hander has been up with the Rays on two other occasions this season but made his lone appearance with the big club June 27, when he struck out four over three scoreless innings in a win over the Diamondbacks.

The Cubs acquired Zeferjahn from the Angels on Monday in exchange for catcher Moises Ballesteros and right-hander Mason McGwire, Jeff Fletcher of The Orange County Register reports.

Zeferjahn will bolster a Cubs bullpen that desperately needed help. Given the current complexion of the Cubs' relief crew, Zeferjahn could serve as the closer, though the Cubs could make further additions leading up Monday's deadline. Additionally, Daniel Palencia (elbow) appears to be close to beginning a rehab assignment and moving toward an eventual return from the injured list. Zeferjahn holds a 3.66 ERA and 75:32 K:BB over 51.2 innings for the Angels this season, logging four saves along the way. He's under team control through 2030.

The Yankees recalled Castro from Triple-A Scranton/Wilkes-Barre on Monday.

Castro has allowed one run with a 4:0 K:BB in 2.2 innings out of the Yankees bullpen this season. He'll be used in middle relief.

The Brewers acquired Romero (abdomen) and Dustin May from the Cardinals on Monday, Ken Rosenthal of The Athletic reports.

Romero has been shelved since mid-July following an emergency appendectomy, but he's expected to be ready to return in mid-August. The southpaw has authored a 3.35 ERA and 43:16 K:BB over 43 innings this season and is an impending free agent.

The Pirates acquired Weaver and cash considerations from the Mets on Monday in exchange for shortstop Sammy Stafura, Jorge Castillo of ESPN.com reports.

Weaver receives a potentially big boost in fantasy value with a move to Pittsburgh, where he could be the favorite to serve as the Pirates' closer. The righty reliever has posted a 1.84 ERA and 45:11 K:BB over 44 innings this season for the Mets. Weaver is under contract for 2027 as well, with a salary of $12.5 million.

The Rays optioned Cook to Triple-A Durham on Monday.

Cook allowed three runs with a 2:2 K:BB over 3.2 innings in his first two major-league appearances. He's being sent down in order to free up a spot on the active roster for right-hander Freddy Peralta, who was acquired from the Mets on Sunday.

The Royals acquired Duran from the Dodgers on Monday in exchange for Kris Bubic (elbow/shoulder), Mark Feinsand of MLB.com reports.

Duran has spent the entirety of the 2026 season at Triple-A Oklahoma City, where he's collected a 3.38 ERA and 61:28 K:BB over 42.2 innings. The 25-year-old made one appearance in the majors with the Athletics in 2025, yielding three runs while recording only one out.

The White Sox designated Davitt for assignment Monday.

The move clears a spot on the 40-man roster for outfielder Brenton Doyle, who was acquired from the Rockies on Monday. Davitt has allowed one run over two innings during his brief time in the majors this season and holds a 6.22 ERA and 64:25 K:BB across 59.1 frames at Triple-A Charlotte.

The Marlins acquired Kisting and infielders Brayden Taylor and Adrian Santana from the Rays on Monday in exchange for catcher Liam Hicks, Joel Sherman of the New York Post reports.

Kisting, 23, has logged an impressive 1.67 ERA and 96:18 K:BB over 86 innings with High-A Bowling Green this season. It's the second time since last offseason that Kisting has been traded, as he went from the Twins to the Rays in November in exchange for right-hander Eric Orze.

The Rangers acquired Macko from the Blue Jays on Monday in exchange for Josh Smith and Josh Stephan, Ken Rosenthal of The Athletic reports.

Macko has made a full-time move to the bullpen this season, posting a 4.91 ERA and 23:10 K:BB over 22 innings for the Blue Jays and a 4.07 ERA and 29:11 K:BB across 24.1 frames with Triple-A Buffalo. The 25-year-old had been optioned to the minors last week, but it's unclear whether the Ranger intend to put him on the big-league roster or send him to Triple-A Round Rock.