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The Pirates recalled Eisert from Triple-A Indianapolis on Tuesday.
After being optioned to Triple-A on Friday, Eisert will now rejoin the big club to replace the injured Isaac Mattson (hip). Eisert hasn't been very effective in the majors this season, posting a 6.00 ERA and 1.39 WHIP across 36 frames and will likely be reserved for low-leverage situations as long as he's with Pittsburgh.
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Pirates' Brandon Eisert: Demoted Friday
Rotowire
The Pirates optioned Eisert to Triple-A Indianapolis on Friday, Danny Demilio of PittsburghBaseballNow.com reports.
The left-hander was called up by Pittsburgh on Tuesday and will return to Triple-A after firing 1.2 scoreless frames in two appearances. In 34 outings between the Pirates and White Sox this season, Eisert has a 6.00 ERA, 1.39 WHIP and 41:12 K:BB across 36 innings.
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Pirates' Brandon Eisert: Recalled from Indianapolis
Rotowire
The Pirates recalled Eisert from Triple-A Indianapolis on Tuesday.
Eisert will give manager Don Kelly another lefty for the bullpen. The 28-year-old has posted a 6.29 ERA in 34.1 major-league innings this season, but a 40:12 K:BB is more promising.
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Pirates' Brandon Eisert: Sent back to Triple-A
Rotowire
The Pirates optioned Eisert to Triple-A Indianapolis on Tuesday.
The Pirates activated the trio of Lake Bachar, Luke Weaver and Kirby Yates, who were all acquired through trades Monday. Eisert was recalled Monday but did not make an appearance. The Pirates also optioned Noah Murdock on Tuesday.
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Pirates' Brandon Eisert: Summoned to majors
Rotowire
Pittsburgh recalled Eisert from Triple-A Indianapolis on Monday.
After being optioned to Indianapolis last Wednesday, Eisert will rejoin the Pirates less than a week later with Mitch Keller (arm) going on the 60-day injured list in a corresponding move. Over 32 appearances in the majors this season between stops with the White Sox and Pirates, the left-handed reliever owns a 6.29 ERA, 1.40 WHIP and 40:12 K:BB across 34.1 innings.
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Pirates' Brandon Eisert: Dispatched to minors
Rotowire
The Pirates optioned Eisert to Triple-A Indianapolis on Wednesday, Jason Mackey of MLB.com reports.
Eisert was needed for 2.1 innings and 41 pitches in Tuesday's extra-innings loss to the Diamondbacks, so he's being replaced by a fresh arm. The lefty holds a 6.29 ERA and 40:12 K:BB over 34.1 innings between the White Sox and Pirates this season.
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Pirates' Brandon Eisert: Shipped to Pittsburgh
Rotowire
The White Sox traded Eisert and Jacob Gonzalez to the Pirates on Friday in exchange for minor-league reliever Jaden Woods and the 34th pick in the 2026 First-Year Player Draft, Jeff Passan of ESPN.com reports.
Eisert has struggled to find his footing in the big leagues this season, logging a 5.93 ERA and 1.24 WHIP through 27.1 innings with the White Sox. Unless a change of scenery sparks a significant turnaround, the 28-year-old southpaw is likely to remain in a middle-relief role with the Pirates.
White Sox's Brandon Eisert: Serving as opener Friday
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Eisert will be the White Sox's opening pitcher for Friday's contest in Detroit, Evan Woodbery of MLive.com reports.
Erick Fedde will follow in bulk relief. Eisert has had three previous opening assignments this season, yielding two runs with a 4:1 K:BB over 3.1 innings in those outings.
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White Sox's Brandon Eisert: Slated for opener assignment
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Eisert will serve as the White Sox's opening pitcher in Tuesday's game against Atlanta, James Fegan of SoxMachine.com reports.
The left-handed Eisert will likely work an inning or two before turning the game over to righty Erick Fedde, who will cover the bulk of the innings out of the bullpen. Eisert will go into action Tuesday having been unscored upon in 10 of 11 appearances since being recalled from Triple-A Charlotte in mid-May.
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White Sox's Brandon Eisert: Operating as opener Saturday
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Eisert will serve as the White Sox's opening pitcher for Saturday's game against the Phillies, Brooke Fletcher of Chicago Sports Network reports.
The top half of the Philadelphia lineup often features three tough left-handed hitters in Kyle Schwarber, Bryce Harper and Brandon Marsh, so the White Sox will have the left-handed Eisert open the contest in an effort to avoid an early deficit. Once Eisert works the first inning or two, right-hander Sean Burke is expected to take over in bulk relief.
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White Sox's Brandon Eisert: Records four outs Friday
Rotowire
Eisert pitched 1.1 perfect innings as an opener Friday against the Tigers, striking out one.
Eisert worked as the opener in this game and retired Sam Antonacci, Dillon Dingler, Jahmai Jones and Riley Greene before handing things over to Erick Fedde. Eisert has a 4.35 ERA and 1.55 WHIP in nine appearances (10.1 innings) for the White Sox this season but has been trending in the right direction, allowing just one run over his last eight appearances since returning to the big-league roster in mid-May.
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White Sox's Brandon Eisert: Will open for ChiSox on Friday
Rotowire
Eisert will serve as the White Sox's opening pitcher in Friday's game versus the Tigers, LaMond Pope of the Chicago Tribune reports.
Eisert will cover the first inning or two for the White Sox before handing things off to primary pitcher Erick Fedde. The left-handed Eisert has allowed five runs with an 8:5 K:BB over nine frames out of the Chicago bullpen this season.
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White Sox's Brandon Eisert: Back in big leagues
Rotowire
The White Sox recalled Eisert from Triple-A Charlotte on Saturday.
Eisert gave up four earned runs in just 2.1 innings during his first stint with the Sox this season and has posted a 6.97 ERA in the minors since his demotion in mid-April. Despite his poor performance, he'll return to the big leagues to give Chicago a fresh bullpen arm, replacing Tyler Schweitzer.
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White Sox's Brandon Eisert: Sent back to minors
Rotowire
The White Sox optioned Eisert to Triple-A Charlotte on Wednesday.
Eisert spent less than a week with the big club and gave up four runs on six hits with a 2:1 K:BB in 2.1 innings. His roster spot will be taken by fellow lefty Tyler Gilbert, who will offer more length in the bullpen.
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White Sox's Brandon Eisert: Back in big leagues
Rotowire
The White Sox recalled Eisert from Triple-A Charlotte on Thursday.
Eisert will return to a middle-relief role in Chicago's bullpen after allowing one run in 3.2 innings over his first four appearances at Triple-A. Duncan Davitt will make the trip to the majors alongside Eisert, and the two pitchers will replace Tyler Schweitzer and Chris Murphy (elbow) on the big-league staff.
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White Sox's Brandon Eisert: Sent to Triple-A
Rotowire
Eisert was optioned to Triple-A Charlotte on Sunday.
Eisert will head to Charlotte after posting a 3.00 ERA and 1.22 WHIP with 12 strikeouts over nine innings in eight appearances with the White Sox during spring training. The southpaw made 72 appearances, including three starts, with the South Siders in 2025, compiling a 4.39 ERA and 1.44 WHIP with 74 strikeouts over 69.2 innings. Eisert will likely return to the major-league roster in relatively short order.
White Sox's Brandon Eisert: Opening Wednesday's contest
Rotowire
Eisert will serve as the White Sox's opening pitcher for Wednesday's game against the Dodgers, Scott Merkin of MLB.com reports.
The Dodgers' lineup typically features two left-handed hitters (Shohei Ohtani and Freddie Freeman) in the top four spots in the order, so the White Sox will likely have the left-handed Eisert work the opening frame or two before exiting the contest. Right-hander Sean Burke is slated to work in bulk relief behind Eisert.
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