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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
Rotowire
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
Rotowire
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.
Eisert picked up the save in Tuesday's 4-2 win over the Astros. He allowed no hits or walks while striking out one over a perfect inning.
With no established closer in place, Eisert became the first White Sox reliever to notch multiple saves this season. After a rough April (6.00 ERA), the southpaw has found his stride, posting a 1.74 ERA, 0.68 WHIP and 12.2 K/9 over his past 10 appearances. This season, the 27-year-old owns a 4.45 ERA and 1.34 WHIP over 28.1 innings.
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White Sox's Brandon Eisert: Serving as opener Tuesday
Rotowire
Eisert will be deployed as the White Sox's opening pitcher in front of bulk reliever Jonathan Cannon in Tuesday's game against the Reds, Jack Ankony of SI.com reports.
The White Sox haven't used an opener since an April 29 loss to the Brewers, but manager Will Venable may want the left-handed Eisert to begin the game on the mound since the Reds typically have the left-handed-hitting TJ Friedl serve as their leadoff hitter. Eisert is unlikely to work more than one or two innings before turning the game over to Cannon, who previously followed an opener in that April 26 contest against the Athletics and ended up covering a season-high 7.2 innings.
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White Sox's Brandon Eisert: Earns first major-league save
Rotowire
Eisert collected the save in Thursday's 3-0 rain-shortened win over the Twins, allowing one hit and striking out one batter in a scoreless seventh inning. He did not issue a walk.
Eisert was brought in for the seventh inning and needed 14 pitches (eight strikes) to get through the frame, only giving up a double to Christian Vazquez. The game was delayed following the seventh inning due to rain and was called an hour later, giving Eisert the first save of his major-league career. He has a 4.76 ERA. 1.32 WHIP and 15:2 K:BB across 11.1 innings this season.
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White Sox's Brandon Eisert: Recalled from Triple-A
Rotowire
The White Sox recalled Eisert from Triple-A Charlotte on Friday.
Eisert takes the roster spot of Fraser Ellard (hamstring), who was placed on the 15-day IL on Friday. Eisert is back in the big leagues after already appearing in three games out of the bullpen for the White Sox this season. He pitched to the tune of a 12.00 ERA across three innings of work before being sent down to the minors earlier in the week.
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White Sox's Brandon Eisert: Sent down to minors
Rotowire
The White Sox optioned Eisert to Triple-A Charlotte on Monday.
Chicago will likely announce a corresponding roster move ahead of its next game Tuesday in Cleveland. A waiver pickup from the Rays in February, Eisert secured a spot in the White Sox's Opening Day bullpen and had made three appearances this season, giving up four earned runs on six hits and one walk while striking out five over three innings.
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White Sox's Brandon Eisert: Claimed by ChiSox
Rotowire
The White Sox claimed Eisert off waivers from the Rays on Friday.
Eisert has now gone from the Blue Jays to the Rays to the White Sox since late January. The left-hander should have a good shot to win a spot in the Chicago bullpen, although he does have minor-league options remaining. Eisert allowed three runs over 6.2 frames during his brief time in the big leagues in 2024.
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