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Andrew Nardi RP | MIA
Marlins' Andrew Nardi: Headed for elbow surgery
The Marlins announced Monday that Nardi (rib) is scheduled to undergo surgery on his left elbow in the near future, Daniel Alvarez-Montes of ElExtraBase.com reports.
Miami placed Nardi on the injured list May 30 due to a left rib cage stress reaction, but that injury is now viewed as a lesser concern after he experienced elbow discomfort while working his way through a throwing program earlier this month. After receiving a consultation last week from renowned arm specialist Dr. Keith Meister last week, Nardi has decided to undergo surgery to address the elbow injury. The type of procedure won't be known until after the operation is completed, but assuming Nardi requires Tommy John or internal brace surgery -- or a hybrid of the two -- he'll likely miss the entire 2027 season. The upcoming elbow surgery is the latest in a long line of health-related setbacks for the reliever, who previously missed the entire 2025 campaign due to a lower-back injury.
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TJ Shook RP | COL
Rockies' TJ Shook: Summoned to big leagues
The Rockies recalled Shook from Triple-A Albuquerque on Monday.
Shook made four relief appearances for the Rockies earlier this season, allowing six runs with a 6:3 K:BB over 5.2 innings. The 28-year-old will provide the Colorado bullpen with a fresh arm after the relief corps covered five innings in Sunday's win over the Giants.
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Justin Martinez RP | ARI
Diamondbacks' Justin Martinez: Ready for 2026 debut with Arizona
The Diamondbacks reinstated Martinez (elbow) from the 60-day injured list Monday.
Martinez has been cleared to make his 2026 debut with the Diamondbacks following a lengthy recovery from Tommy John surgery, which he underwent June 25, 2025. The hard-throwing reliever looked sharp over his four rehab appearances between Single-A Visalia and Triple-A Reno, firing four scoreless, no-hit innings while striking out six and issuing just one walk. The Diamondbacks' closer situation has been unsettled over the past three weeks after Paul Sewald lost the job and eventually, his roster spot, so Martinez could make for a viable speculative pickup for fantasy managers mining for saves. Before requiring surgery last summer, Martinez had previously been a key high-leverage arm for Arizona in 2024 and the early part of the 2025 season.
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Hunter Barco RP | PIT
Pirates' Hunter Barco: Sent back to Triple-A
The Pirates optioned Barco to Triple-A Indianapolis on Monday, Kevin Gorman of TribLive.com reports.
Barco's stay in Pittsburgh lasted just one day, with the southpaw being called upon out of the bullpen to piggyback starter Lake Bachar in Sunday's 8-3 win over the Red Sox. After Bachar opened the game with three scoreless frames, Barco came on to work the next three innings, striking out four batters while yielding three earned runs on two hits and one walk. Barco will give up his spot on the active roster and in the bullpen to right-hander Yohan Ramirez (personal), who was reinstated from the paternity leave list in a corresponding move.
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Yohan Ramirez RP | PIT
Pirates' Yohan Ramirez: Back from paternity leave
The Pirates reinstated Ramirez (personal) from the paternity leave list Monday, Kevin Gorman of TribLive.com reports.
Ramirez stepped away from the Pirates for the entirety of the team's three-game weekend series with the Red Sox to spend time with his growing family. He'll rejoin the bullpen ahead of Monday's series opener versus the Tigers, with the Pirates optioning left-hander Hunter Barco to Triple-A Indianapolis to clear room for Ramirez on the active roster and in the bullpen.
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Jason Foley RP | SF
Giants' Jason Foley: Tosses scoreless inning Sunday
Foley struck out one in a scoreless inning during Sunday's 13-7 loss to the Rockies.
Foley entered the game in the ninth inning and threw five of his 11 pitches for strikes en route to his second straight scoreless outing. The 30-year-old right-hander has appeared in six games this month, during which he has posted a 3.38 ERA, 1.13 WHIP and 4:4 K:BB in 5.1 innings. Overall, he owns a 4.66 ERA, 1.34 WHIP and 6:5 K:BB across 9.2 innings this season.
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Kent Emanuel SP | CIN
Reds' Kent Emanuel: Added to roster for spot start
The Reds selected Emanuel's contract from Triple-A Louisville on Monday.
Emanuel was pitching in independent ball a couple weeks ago when the Reds signed him to a minor-league contract. He struck out eight over six innings of one-run ball in his lone start with Louisville, and the 34-year-old southpaw will now join the Reds to make a start in the first game of Monday's doubleheader against the Cardinals. The start is the first of Emanuel's big-league career, after his first 22 appearances in the majors came in relief.
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Ron Marinaccio RP | CIN
Reds' Ron Marinaccio: Scrubbed from 40-man roster
The Reds designated Marinaccio for assignment Monday.
Marinaccio was scooped up off waivers earlier this month and is now headed back to the waiver wire after getting roughed up for 10 runs over 5.1 innings covering four appearances for Cincinnati. His removal from the 40-man roster clears a spot for the arrival of Kent Emanuel.
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Zach McCambley RP | CIN
Reds' Zach McCambley: Serving as 27th man
The Reds recalled McCambley from Triple-A Louisville on Monday.
He'll serve as the 27th man on the roster for Monday's doubleheader against the Cardinals. McCambley has logged 7.2 innings across seven appearances for the Reds this season, allowing four runs with a 7:6 K:BB. He will likely be sent back to Louisville following the twin bill.
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Tony Santillan RP | CIN
Reds' Tony Santillan: Could be activated this week
Santillan (oblique) could be activated to the major-league roster later this week, Mike Petraglia of MLB.com reports.
Santillan worked a scoreless inning as the opener in Sunday's game and will make at least one more appearance either Tuesday or Wednesday. If all goes well, the right-hander could rejoin the Reds at the end of the week. He's made two scoreless appearances with the Bats, striking out three over two innings.