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Ferguson (oblique) threw a bullpen session Thursday that went well and he is scheduled for another one Sunday, MLB.com reports.
If all goes well in Sunday's session, Ferguson could progress to facing live batters Tuesday. The next step beyond that would be a rehab assignment.
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Reds' Caleb Ferguson: Cleared for mound work
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Ferguson (oblique) will throw a bullpen session Thursday, Charlie Goldsmith of Fox 19 Now Cincinnati reports.
It appears to be the first time Ferguson has thrown off a mound since he suffered a right oblique strain in mid-March. Ferguson will need a rehab assignment before rejoining the Reds' bullpen.
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Reds' Caleb Ferguson: Throws on flat ground
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Ferguson (oblique) threw from 60 feet on flat ground Wednesday, MLB.com reports.
Ferguson will join Cincinnati on its seven-game road trip that begins Friday in Texas before heading to Miami next week. Going out on the road with the team suggests the left-handed reliever is nearing a return, but the next step will be throwing off a mound.
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Reds' Caleb Ferguson: Sidelined by strained oblique
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The Reds placed Ferguson (oblique) on the 15-day injured list Wednesday.
Ferguson will get a late start to the season after tweaking his right oblique in mid-March. Once healthy, he's expected to fill a middle-relief role in the Cincinnati bullpen.
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Reds' Caleb Ferguson: Will undergo second MRI
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Ferguson (oblique) is scheduled for a second MRI on March 25 to determine he's healing well, MLB.com reports.
If doctors feel like Ferguson is making progress, the left-hander could begin a throwing program. He was expected to be unavailable for start of the regular season but is pegged to return at some point in April.
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Reds' Caleb Ferguson: Out to begin season
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Ferguson will open the season on the injured list due to an oblique injury, Gordon Wittenmyer of The Cincinnati Enquirer reports.
Manager Terry Francona said that it is a mild oblique injury and that Ferguson will be out "a couple of weeks" and that "he has to heal the way it heals," per Charlie Goldsmith of Fox 19 Now Cincinnati. The southpaw was signed by the Reds in December and is likely to fill a middle-relief role when healthy.
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Reds' Caleb Ferguson: Nabs one-year deal from Reds
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The Reds signed Ferguson to a one-year contract Tuesday, Gordon Wittenmyer of The Cincinnati Enquirer reports.
Ferguson made 70 regular-season appearances in 2025 between the Pirates and Mariners, posting a 3.58 ERA and 51:22 K:BB over 65.1 innings. The southpaw held left-handed hitters to a .184/.261/.204 batting line, so Ferguson should be leaned on heavily by manager Terry Francona in 2026 when the opposition has lefties due up.
Mariners' Caleb Ferguson: Struggling to limit traffic for M's
Rotowire
Ferguson allowed one run on three hits in one-third of an inning Sunday against the Astros.
The Mariners acquired Ferguson from the Pirates ahead of the trade deadline to bolster their bullpen, but he hasn't been particularly reliable for his new team. Through 18.1 innings for Seattle, the southpaw has a 3.93 ERA, 1.53 WHIP and 14:7 K:BB. Given Ferguson's shakiness, Gabe Speier will likely remain the preferred left-handed high-leverage arm for the M's in the future.
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Mariners' Caleb Ferguson: Rocky start to Mariners tenure
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Ferguson allowed one run on two hits and one walk in the seventh inning Saturday against the Guardians. He struck out one.
Ferguson has now surrendered at least one run in four of his past six outings. The 29-year-old southpaw has certainly been inconsistent when called on from the Mariners' bullpen since joining the team in late July -- Ferguson has a 4.50 ERA, 1.50 WHIP and 8:4 K:BB through his first 12 innings for Seattle.
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Mariners' Caleb Ferguson: Scoreless outing in team debut
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Ferguson threw a clean seventh inning with no strikeouts in Thursday's 6-0 win over the Rangers.
Ferguson got off on the right foot in his team debut, though it's worth noting he entered in a low-leverage situation as the Mariners nursed a 6-0 lead. While the 29-year-old southpaw may not be part of the high-leverage mix right off the bat, it's not out of the question that he'll eventually work his way into a setup role behind closer Andres Munoz. Ferguson is just one of two active lefties in Seattle's bullpen along with Gabe Speier.
The Pirates traded Ferguson to the Mariners on Wednesday in exchange for Jeter Martinez, Jeff Passan of ESPN.com reports.
Ferguson signed a one-year contract with the Pirates in January after spending the 2024 season with the Astros and Yankees. The 29-year-old southpaw has and 3.74 ERA, 1.08 WHIP and 34:14 K:BB across 43.1 innings this season. Ferguson boasts the lowest hard-hit rate the majors (25.2 percent ) and has given up just one home run this season, and he'll give the Mariners a reliable setup man out of the bullpen.
Ferguson agreed to a one-year, $3 million contract with the Pirates on Thursday, Alex Stumpf of MLB.com reports.
Ferguson put up a disappointing 4.64 ERA over 62 appearances in 2024 between the Yankees and Astros but did record 67 strikeouts across 54.1 innings out of the bullpen. He could end up being the left-handed setup man in Pittsburgh, though Stumpf relays that the Pirates intend to let Ferguson get stretched out over the winter before potentially placing him on a starter's schedule in spring training.
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Astros' Caleb Ferguson: Shipped to Houston
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The Astros acquired Ferguson from the Yankees on Tuesday in exchange for right-hander Kelly Austin, Jack Curry of YES Network reports.
Ferguson will provide the Astros with additional bullpen depth after appearing in 42 games with the Yankees this season. The 27-year-old logged a 5.13 ERA, a 1.50 WHIP and 10 holds across 33.1 innings for New York. He's not expected to see much high-leverage work in Houston.
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Yankees' Caleb Ferguson: Dominant in securing 10th hold
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Ferguson recorded a hold against the Red Sox on Friday by striking out all four batters he faced.
Ferguson entered with two runners on base and two outs in the bottom of the sixth inning and finished the frame by fanning Jarren Duran. The lefty reliever returned for the seventh and proceeded to strike out the side on 15 pitches. It was the sixth straight scoreless outing for Ferguson, and he's picked up three holds and a victory while registering an 8:2 K:BB over five innings during that span. He leads the Yankees with 10 holds on the campaign.
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