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Brant Hurter RP | DET
Tigers' Brant Hurter: Set to resume rehab assignment
Hurter (back) will resume his rehab assignment with Triple-A Toledo on Wednesday, Chris McCosky of The Detroit News reports.
Hurter was pulled off his initial rehab assignment to work on mechanics after he allowed 11 runs (10 earned) in his first 3.2 innings. The lefty has been out since late May with lumbar spine inflammation, and a timeline for his activation will depend on how he looks and feels in the coming days with Toledo.
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Jeremiah Estrada RP | SD
Padres' Jeremiah Estrada: Shelved by shoulder impingement
The Padres placed Estrada on the 15-day injured list Wednesday due to a right shoulder impingement.
Estrada will head to the IL for the third time this season after previously missing action due to elbow and knee issues. When healthy, he's logged a 3.48 ERA and 38:16 K:BB over 31 frames this season. It's unclear how long Estrada's absence will last.
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Cade Gibson RP | MIA
Marlins' Cade Gibson: Dispatched to Triple-A
The Marlins optioned Gibson to Triple-A Jacksonville on Wednesday.
Gibson will head back to the minors after he yielded runs in five of his last six appearances while turning in a 7.36 ERA, 1.64 WHIP and 6:5 K:BB in 7.1 innings during that stretch. The Marlins called up lefty Patrick Monteverde from Triple-A to take Gibson's spot in the bullpen.
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Pat Monteverde RP | MIA
Marlins' Patrick Monteverde: Joining big-league roster
The Marlins selected Monteverde's contract from Triple-A Jacksonville on Wednesday.
He'll join the Miami bullpen as a replacement for left-hander Cade Gibson, who was optioned to Triple-A. Monteverde made his big-league debut last season, giving up four earned runs over 3.2 innings in his lone appearance before being designated for assignment and clearing waivers. He's spent the entire 2026 campaign to date at Jacksonville, recording a 5.84 ERA, 1.49 WHIP and 66:38 K:BB in 91 innings over 23 appearances (18 starts).
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Braxton Roxby RP | SF
Giants' Braxton Roxby: Receives first big-league call-up
The Giants selected Roxby's contract from Triple-A Sacramento on Wednesday.
Roxby will head to the big leagues for the first time after submitting a 4.11 ERA, 1.18 WHIP and 53:26 K:BB over 57 innings across 36 relief appearances with Sacramento. He'll provide the Giants with a multi-inning option out of the bullpen after the pitching staff had seen its depth get thinned over the past few days with all of Carson Whisenhunt (elbow), Adrian Houser (forearm) and JT Brubaker (ribs) landing on the injured list.
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Ricky Vanasco RP | ATL
Braves' Ricky Vanasco: Claimed by Atlanta off waivers
Atlanta claimed Vanasco off waivers from the Tigers on Wednesday and optioned him to Triple-A Gwinnett.
Vanasco was designated for assignment by the Tigers earlier this week, but he will now join Atlanta's 40-man roster. The right-handed reliever has allowed 12 runs (11 earned) with a 4:6 K:BB over 6.1 innings in the majors this season, but he's been much more effective at Triple-A Toledo with a 2.53 ERA and 59:24 K:BB in 46.1 frames.
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Samy Natera Jr. RP | LAA
Angels' Samy Natera: Beginning rehab assignment Friday
Natera (back) will begin a rehab assignment Friday with Single-A Rancho Cucamonga, Rhett Bollinger of MLB.com reports.
Natera landed on the 15-day injured list less than a week ago after experiencing lower-back spasms, but he resumed mound work Tuesday and is nearing a return to game action. The lefty reliever is eligible for activation Sept. 1 and is tracking toward a return on that date.
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Ben Brown RP | CHC
Cubs' Ben Brown: Suffers setback with neck injury
Cubs manager Craig Counsell said Wednesday that Brown (neck) suffered a setback during his live batting practice session Tuesday, Meghan Montemurro of the Chicago Tribune reports.
Working his way back from a stress reaction in his neck, Brown began feeling discomfort in his neck toward the end of the session, and the pain worsened as the day moved along. He is headed back to Chicago to be evaluated and is "gonna slow it down in some way," per Counsell. Brown hasn't pitched in a game since late June, and he now looks like a long shot to make it back before the end of the season.
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Trevor Martin RP | LAA
Angels' Trevor Martin: Joins Halos bullpen
The Angels recalled Martin from Triple-A Salt Lake on Wednesday.
Martin was claimed off waivers by the Angels earlier this month and will now get a look with the big club. The 25-year-old reliever has logged a 2.79 ERA and 55:27 K:BB over 48.1 innings at the Triple-A level this season, and he's permitted five runs (four earned) with a 7:4 K:BB across 11.1 frames in the majors in 2026.