The White Sox have traded left-handed reliever Tanner Banks to the Phillies. Philadelphia is sending 19-year-old infield prospect William Bergolla to Chicago in return.
Banks, 32, has been a solid middle reliever for the White Sox over the past three seasons, with a 3.89 ERA and 3.67 SIERA in 162 innings pitched. He has an unremarkable 4.13 ERA this year, but his 26.8% strikeout rate, 3.23 xERA, and 3.12 SIERA are the best marks of his career. Of further note, Banks has gone multiple innings in 16 of his 41 appearances this season. Matt Gelb of The Athletic notes he will be a multi-inning arm out of the Phillies’ bullpen and “could return to starting at some point.” The southpaw has also been a menace against same-handed opponents this season, with a 33.7% strikeout rate and a 1.90 FIP. Lefties have hit just .184 against him.
The Phillies had already made one big bullpen acquisition ahead of the deadline, trading for Angels closer Carlos Estevez over the weekend. However, Ken Rosenthal of the Athletic noted on Monday that Philadelphia was still seeking bullpen help. After adding the righty Estevez, it stood to reason they would seek a southpaw, especially given José Alvarado’s recent struggles. The move to add Banks makes even more sense given the news that the Phillies have traded fellow left-handed reliever Gregory Soto to the Orioles, which broke shortly after the report that the Phillies had acquired Banks. Soto has put up solid underlying numbers throughout his season and a half with Philadelphia (3.63 SIERA), but his 4.42 ERA over 95 2/3 innings pitched is less inspiring. Evidently, the Phillies decided they saw more that they liked in Banks. Not only does he have better splits against left-handed batters this season and a proven ability to pitch multiple innings, but as a pre-arb player, he is significantly less expensive than Soto and comes with significantly more team control.
Bergolla signed with the Phillies as an international free agent in January 2022. Entering the season, he was the team’s No. 10 prospect according to Baseball America and No. 13 according to FanGraphs. Keith Law of The Athletic was not as high on the young infielder, leaving him off of his list of the top 20 prospects in the Phillies’ system. Ultimately, different evaluators disagree about Bergolla’s throwing arm, speed, and power potential, but just about everyone seems to agree that his ability to put the ball in play is his most important skill. He had a 7.5% strikeout rate at Single-A last season, and he is currently running an 11.2% strikeout rate at High-A in 2024.
Robert Murray of FanSided was the first to report that the Phillies were acquiring Banks from the White Sox. Scott Merkin of MLB.com first suggested that Bergolla could be headed back to the White Sox, and Todd Zolecki of MLB.com later confirmed the report.