MLB Player News

Atlanta acquired Petersen from the Angels on Tuesday in exchange for cash and optioned him to Triple-A Gwinnett.

Petersen was dumped from the Halos' 40-man roster Monday but will reclaim a roster spot with his new organization. The 30-year-old allowed 13 earned runs in 19.2 innings between the Dodgers and Marlins last season but dominated in Triple-A to the tune of a 1.64 ERA and 0.76 WHIP across 33 frames.

The Mariners selected Diaz 's contract from Triple-A Tacoma on Tuesday.

Seattle optioned right-hander Emerson Hancock to Triple-A in a corresponding move, creating an opening in the rotation until George Kirby (shoulder) is ready to return from the injured list. Though Diaz will give the Mariners a fresh arm out of the bullpen in the short term, he could be a candidate to fill the vacant rotation spot if he's had sufficient rest by the time Seattle next requires a fifth starter. Diaz previously started in 23 of his 24 appearances for Tacoma in 2024, logging a 4.73 ERA, 1.52 WHIP and 120:54 K:BB over 118 innings.

Holderman could see some save opportunities for the Pirates after the team demoted David Bednar to Triple-A Indianapolis.

Holderman is high on the Pirates' bullpen hierarchy, but he's struggled in all three of his appearances this season, permitting three runs on four hits and three walks. As such, Dennis Santana might be a better bet to get the first crack at the closer job for Pittsburgh.

Santana might see save chances for the Pirates following the demotion of David Bednar to Triple-A Indianapolis.

Santana was excellent for the Pirates last season after being claimed off waivers, posting a 2.44 ERA and 50:11 K:BB over 44.1 innings while notching one save. He hasn't allowed a hit or a run in his first two appearances in 2025, holding a 3:2 K:BB in 1.1 frames. Colin Holderman could also be in the saves mix for Pittsburgh, although he's struggled this season in yielding three runs on four hits and three walks over three innings.

Blue Jays manager John Schneider said Monday that Lucas is "Plan A" to start Wednesday versus the Nationals, Keegan Matheson of MLB.com reports.

As long as he isn't needed in relief Tuesday, Lucas will take the ball Wednesday in what would be his first major-league start. He's filling the spot that opened up when Max Scherzer (thumb) was placed on the injured list, and the lefty could be needed for additional starts while Scherzer recovers. Lucas built up to 2.2 innings and 42 pitches during spring training, so he might struggle to work deep enough into Tuesday's contest to qualify for a win.

Patrick is listed as the Brewers' probable pitcher for Sunday's game versus the Reds, Adam McCalvy of MLB.com reports.

Patrick is set to make his first major-league start Tuesday against the Royals. It's possible the Brewers change their mind if things go particularly poorly Tuesday, but for now Patrick is lined up for another start this weekend. Patrick may be needed for additional starts after that, although Jose Quintana is likely to be ready to join the rotation next week.

The Pirates optioned Bednar to Triple-A Indianapolis on Tuesday.

Bednar really struggled last season and has been tagged for four runs (three earned) over three appearances while recording just three outs so far this season. The Pirates have elected to have him work out his issues in a less pressurized environment. Dennis Santana and Colin Holderman are the top candidates for saves in the Pirates' bullpen.

The Phillies claimed de Geus off waivers from the Marlins on Tuesday, Todd Zolecki of MLB.com reports.

De Geus will join his fourth organization since January after landing with the Phillies. The right-handed reliever has been assigned to Triple-A Lehigh Valley, where he will give the Phillies some bullpen depth.

The Astros acquired Robertson from the Blue Jays on Tuesday in exchange for Edinson Batista, Chandler Rome of The Athletic reports.

Robertson had been booted from Toronto's 40-man roster and now will report to Triple-A Sugar Land, where he will provide relief depth for Houston. The 26-year-old has made 27 appearances at the major-league level, compiling a 5.30 ERA and 40:11 K:BB in 35.2 innings.

Diaz (hamstring) threw a live batting practice session Tuesday, Charlie Goldsmith of the Dayton Daily News reports.

Diaz continues to work on his mechanics after they were thrown off following a hamstring injury. The reliever is eligible for activation from the 15-day injured list April 8, but there has not been an established timetable for his return yet. Reds manager Terry Francona has indicated he would like Diaz to get his closer job back when he's healthy and his mechanics are in order. Emilio Pagan has recorded the Reds' lone save so far, while Ian Gibaut has a blown save.