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Philip Abner RP | NYM
Orioles' Philip Abner: Claimed by Baltimore
The Orioles claimed Abner off waivers from the Mets on Monday.
Abner split the 2026 season with the Diamondbacks, Giants and Mets and will now head to Baltimore after appearing in 13 games out of the bullpen with Arizona and San Francisco. He was hammered for a combined 17 runs (15 earned) on 21 hits and 11 walks with 10 strikeouts across 19 innings. Abner will look for a fresh start with Baltimore in the spring.
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Joshua White RP | MIA
Orioles' Josh White: Heads to Baltimore via waivers
The Orioles claimed White off waivers from the Marlins on Monday.
White made his major-league debut with Miami this past season but was tagged for five runs on one hit, four walks and a hit-by-pitch across two-thirds of an inning. He spent the bulk of the campaign with Triple-A Jacksonville, logging a 2.41 ERA, 1.21 WHIP and 62:31 K:BB across 56 frames. The 25-year-old will likely get a shot to break camp with Baltimore.
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Jose Butto SP | SF
Rangers' Jose Butto: Lands with Rangers
The Rangers claimed Butto (arm) off waivers from the Giants on Monday.
Butto missed nearly all of this past season while recovering from two surgeries to address a blood clot and artery in his right arm. It's unclear where the right-handed reliever is at in his rehab. Butto holds a career 3.76 ERA and 185:99 K:BB over 189 innings at the big-league level.
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Evan Reifert SP | TB
Astros' Evan Reifert: Added to 40-man roster
The Astros selected Reifert's contract from Triple-A Sugar Land on Monday.
Reifert was acquired from the Rays in a trade this past weekend and is now a member of the Astros' 40-man roster. He logged a 2.48 ERA and 81:34 K:BB over 58 frames this season with Triple-A Durham. Reifert has yet to make his major-league debut but is a good bet to do so next season with the Astros.
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Roddery Munoz RP | HOU
Astros' Roddery Munoz: Regains 40-man roster spot
The Astros selected Munoz's contract from Triple-A Sugar Land on Monday.
Munoz was dropped from the Astros' 40-man roster shortly after Opening Day after he was knocked around for seven runs in four innings. However, he's earned his way back onto the roster after posting a 3.06 ERA and 76:21 K:BB over 53 innings at Sugar Land.
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Isaac Mattson RP | PIT
Mariners' Isaac Mattson: Claimed off waivers by Seattle
The Mariners claimed Mattson off waivers from the Pirates on Monday, Colin Beazley of the Pittsburgh Post-Gazette reports.
Mattson posted a 2.45 ERA and 45:19 K:BB over 47.2 innings in 2025, but he stumbled in 2026 with a 5.35 ERA and 36:18 K:BB over 38.2 frames. The 31-year-old will look to fill a middle relief role in Seattle.
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Evan Carter CF | TEX
Rangers' Evan Carter: Undergoes hip surgery
Rangers president of baseball operations Chris Young said Monday that Carter will not be ready for Opening Day next season after undergoing arthroscopic surgery on his right hip last week to address a labral injury and a hip impingement, Kennedi Landry of MLB.com reports.
Per Shawn McFarland of The Dallas Morning News, Young added of Carter that the Rangers "expect him to play" most of next season, though it's uncertain how long exactly he'll be out. It's also unclear how long Carter has had the hip issue or if it's related to his chronic back problems. The 24-year-old outfielder slashed .194/.288/.315 with nine home runs and 17 stolen bases over 141 games for the Rangers this season.
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Junior Perez LF | CHW
White Sox's Junior Perez: Removed from 40-man roster
The White Sox outrighted Perez to Triple-A Charlotte on Monday.
He's no longer on the 40-man roster but will remain in the organization. Perez went 6-for-35 with three home runs and a 1:14 BB:K in 22 contests with the White Sox this season. The 25-year-old will give Chicago some outfield depth at Charlotte.