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Jonah Tong RP | NYM
Mets' Jonah Tong: Dominating at Double-A
Tong struck out 10 and allowed one hit and one walk over four scoreless innings for Double-A Binghamton on Sunday.
The 21-year-old righty is racking up Ks in the Eastern League, and his control might be taking a step forward as well. After issuing five passes in his first start of the season, Tong has posted a 25:6 K:BB over his last three starts (13.1 innings). He could rise up prospect lists quickly if he continues to dominate and develops a little more efficiency.
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Wade Miley SP | CIN
Reds' Wade Miley: Dealing with groin injury
Reds manager Terry Francona said Monday that it was a groin injury that forced Miley (elbow) from his rehab start Sunday at High-A Dayton, Charlie Goldsmith of the Dayton Daily News reports.
Francona added that Miley could be back on the mound this week, so it seems the setback is a minor one. Miley is on a minor-league contract with Cincinnati as he works his way back from a hybrid UCL repair on his left elbow.
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JR Ritchie SP | ATL
Braves' JR Ritchie: Strong start to season
Ritchie has posted a 2.57 ERA, 1.00 WHIP and 17:8 K:BB through 21 innings over four starts for High-A Rome.
The 21-year-old right-hander is looking to stay healthy this year after making a late-season return from Tommy John surgery in 2024. Ritchie's strikeout rate is down in the early going -- he fanned 48 over 42.1 innings between Single-A and High-A last year -- but he built up to 6.2 innings in his most recent outing April 22, allowing two runs on three hits with a 5:0 K:BB. Atlanta won't rush Ritchie up the ladder, but a promotion to Double-A in the second half wouldn't be surprising if he continues to have success in the South Atlantic League.
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Cam Caminiti SP | ATL
Braves' Cam Caminiti: Still building up
Caminiti (forearm) is throwing in extended spring training, and Atlanta hasn't announced a timeline for him to be assigned to a full-season affiliate, Mark Bowman of MLB.com reports.
The 18-year-old southpaw, selected 24th overall in the 2024 First-Year Player Draft, reported some forearm soreness in March and has been brought along slowly as a result. Caminiti is likely to be sent to Single-A Augusta once he's cleared to officially begin his campaign.
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Martin Perez SP | ATL
White Sox's Martin Perez: Expected back late in 2025
White Sox manager Will Venable said last Tuesday that he anticipates Perez (elbow) returning from the 60-day injured list at some point in September, ESPN.com reports. "He's continuing to get evaluated," Venable said of Perez, who was diagnosed last week with a flexor tendon strain in his left elbow. "We're going to treat him and expect him to pitch later on in the summer."
After inking a one-year, $5 million deal with Chicago in the offseason, Perez had been a pleasant surprise through his first four starts of the season, turning in a 3.15 ERA, 1.25 WHIP and 18:11 K:BB over 20 innings. The 34-year-old southpaw left his April 18 start after experiencing forearm soreness and was placed on the IL after his MRI revealed a strain. Perez won't require reconstructive Tommy John surgery on his elbow, but he'll be shut down for an extended period and may not be ready to begin his throwing program until well after the All-Star break. Even if Perez makes it back from the shelf late in the season, he may not have enough time to get ramped up for a starting role and could work out of the bullpen.
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Shane Bieber SP | TOR
Guardians' Shane Bieber: Close to pitching in sim games
Bieber (elbow) is expected to begin pitching in simulated games at the Guardians' spring training complex in Arizona at some point in May, SI.com reports.
Though the Guardians haven't officially confirmed as much, Bieber appears to have reached the point in his rehab that he's facing hitters, after he had been limited to throwing bullpen sessions by the end of spring training. The right-hander is working his way back from April 12, 2024 Tommy John surgery and will require an extensive ramp-up period once he's deemed ready for game action in the minors. If he avoids any setbacks, Bieber could be ready to make his 2025 debut for the Guardians around midseason.
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Tony Gonsolin SP | KC
Dodgers' Tony Gonsolin: Slated for season debut Wednesday
Gonsolin (back) is expected to be the Dodgers' starting pitcher against the Marlins on Wednesday, independent journalist Mike DiGiovanna reports.
Gonsolin began the season on the injured list due to a back injury, but he's been prepping for a return in the minor leagues since early April. In four appearances with Triple-A Oklahoma City, he's posted a 3.21 ERA, 1.29 WHIP and 16:6 K:BB over 14 innings, with the veteran righty's longest outing being a five-inning, 79-pitch start last Wednesday. Per Bill Plunkett of The Orange County Register, Los Angeles will likely go with a bullpen game Tuesday, giving Gonsolin a full week between his last minor-league outing and his 2025 MLB debut, which will be his first big-league appearance since 2023. If all goes well for Gonsolin, he should be able to keep a spot in the Dodgers' rotation given that Blake Snell is on the injured list with a shoulder issue, Tyler Glasnow could land on the IL due to a shoulder injury of his own and Shohei Ohtani's target date for a return to the mound remains uncertain.
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Kyle Gibson SP | BAL
Orioles' Kyle Gibson: Likely to debut Tuesday
Gibson (back) is expected to be called up from High-A Aberdeen to make his Orioles debut Tuesday against the Yankees at Camden Yards, Roch Kubatko of MASNSports.com reports.
Because Gibson didn't sign a one-year, $5.25 million deal with the Orioles until spring training had already wrapped up, he agreed to begin the season in the minors to continue building up his pitch count. The right-hander turned in a 3.75 ERA, 1.00 WHIP and 13:2 K:BB over 12 innings across his three outings in the minors, though he hasn't pitched since April 20 after developing back tightness following his appearance with Aberdeen that day. The Orioles don't view that injury as a major concern, however, and since Gibson covered five innings and 78 pitches in his final minor-league outing, he should be ready to take on something close to a traditional starter's workload in his 2025 big-league debut. Though Gibson has never been a major fantasy contributor, the 37-year-old right-hander's ability to competently eat innings should prove valuable to an Orioles rotation that has been decimated by injuries and has received poor performances from veterans Charlie Morton and Dean Kremer through the first month of the season.
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Chayce McDermott RP | NYM
Orioles' Chayce McDermott: Wild in first rehab start
McDermott (lat) covered 1.2 innings in his first rehab start Sunday with Double-A Chesapeake, striking out three while allowing one earned run on one hit and three walks.
McDermott has resided on the Orioles' 15-day injured list all season after suffering a lat strain early in spring training, but after facing live hitters at extended spring training last week without issue, he received the green light to make his 2025 debut in the minors. Unsurprisingly, McDermott was a bit shaky in his first outing, needing 43 pitches to record four outs and throwing more balls (22) than strikes (21). Though the Orioles have multiple holes in their big-league rotation, McDermott could need most of his 30-day rehab window in the minors to shake off the rust and build up his pitch count before he's activated from the IL.
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Keider Montero SP | DET
Tigers' Keider Montero: Sent back down after spot start
The Tigers optioned Montero to Triple-A Toledo on Sunday.
Montero made a spot start during Saturday's doubleheader against the Orioles, yielding one run on four hits and two walks while striking out two across 4.1 innings of work. The right-hander will now rejoin the rotation at Toledo as he awaits another opportunity at the big-league level.