The Orioles designated Zimmermann for assignment Thursday.

Zimmermann was pushed off the 40-man roster with the Orioles needing to clear a spot for infielder Emmanuel Rivera, who was claimed off waivers from the Marlins. The 29-year-old southpaw made 38 appearances (27 starts) with the Orioles over the previous four seasons, but even with injuries testing the big club's rotation depth in recent weeks, Zimmermann had yet to receive a call-up from Triple-A Norfolk in 2024. He's mostly served as a member of Norfolk's rotation when healthy this season, logging a 4.64 ERA, 1.47 WHIP and 60:25 K:BB across 66 innings.

The Tigers recalled Guenther from Triple-A Toledo on Thursday.

Guenther made one relief appearance with the Tigers earlier this month, allowing one earned run over 1.1 innings of work. The left-hander will likely be with the big club only for a few days until Alex Faedo is back from paternity leave.

Holton will serve as the Tigers' opening pitcher for Thursday's game against the Cubs, Evan Petzold of the Detroit Free Press reports.

Holton has covered as much as 3.1 innings this season, but because he tossed 1.2 innings and 20 pitches in Wednesday's 8-2 win, manager A.J. Hinch isn't likely to ask the lefty to cover more than the opening frame or two. Kenta Maeda is available on six days' rest and should serve as the Tigers' bulk reliever.

The Tigers placed Faedo on the paternity list Thursday.

Faedo will miss at least one and as many as three games as he welcomes a new member to the family. He'll cede his spot on the active roster to left-hander Sean Guenther, who was recalled from Triple-A Toledo.

Yarbrough is expected to be deployed as a bulk reliever in Thursday's game versus the Angels, Ben Nicholson-Smith of Sportsnet.ca reports.

Ryan Burr will be the Blue Jays' opening pitcher, but it will be Yarbrough who is likely to cover most of the innings. The left-hander hasn't gone more than two innings in any of his first four appearances with Toronto, but he lasted three-plus innings in eight of his 32 outings earlier this season with the Dodgers.

Burr will serve as the Blue Jays' opening pitcher in Thursday's game versus the Angels, Keegan Matheson of MLB.com reports.

Burr will draw his first opener assignment of the season after delivering a 5.40 ERA and a 23:8 K:BB over 18.1 innings out of the bullpen. Ryan Yarbrough is expected to follow Burr as the bulk reliever.

Soroka (shoulder) will throw a bullpen session Friday and could be sent on a rehab assignment immediately after, MLB.com reports.

Soroka has been sidelined since July 14 but has ramped up his activity in the last week by throwing bullpen sessions. He was pitching in a multi-inning relief role before going down with the injury, so he may need a few rehab appearances before returning.

Rodriguez picked up the save over the Athletics on Wednesday, striking out one over a perfect ninth inning.

Rodriguez took over with a two-run lead in the bottom of the ninth and needed nine pitches to get through the leadoff batter before ultimately retiring the side in order for his first save of the campaign. Rodriguez now appears to be working in a closer-by-committee situation since Pete Fairbanks is on the injured list due to a lat strain, as Edwin Uceta recorded the Rays' previous save on Aug. 20. The 28-year-old right-hander has yet to allow a run in August, posting a 10:3 K:BB over that seven-inning stretch (eight appearances).

Erceg picked up the save over the Angels on Wednesday, striking out two over a perfect ninth inning.

Erceg again looked the part after assuming close duties with a three-run lead in the ninth Wednesday, striking out the first two batters he faced before getting Jo Adell to line out to end the game. The right-hander has converted each of his three save opportunities with Kansas City and has yet to allow any runs since being acquired by his new club at the end of July. Over his nine outings (10.1 innings) with the Royals, Erceg has posted a 14:0 K:BB, recording double-digit strikeouts in five separate appearances in that span.

Dominguez (3-4) allowed a run on one hit and struck out one over one-third of an inning to take the loss Wednesday versus the Mets.

Dominguez will be happy to leave Citi Field, as he's taken two walk-off losses during the Orioles' three-game series in Queens. Jesse Winker delivered the decisive solo home run in the bottom of the ninth inning to send Dominguez to his second straight loss. The right-hander is now at a 4.40 ERA, 1.15 WHIP and 55:15 K:BB through 47 innings this year. He's added four saves and five holds, and while he's been the Orioles' top closing option in August, that could change quickly if he doesn't correct course from his current slump.