The White Sox are once again turning to left-hander Tyler Schweitzer as they continue reshaping a bullpen that has quickly become a revolving door.
Back in April, the Chicago White Sox called upon left-handed pitcher Tyler Schweitzer, the No. 23-ranked prospect in the organization, to make his MLB debut.
The White Sox selected Schweitzer's contract, therefore adding him to the 40-man roster, but his time in the big leagues only lasted one day.
In his MLB debut against the Baltimore Orioles on April 8, Schweitzer did 1.1 innings, allowing one run while recording his first big league strikeout. He was then optioned back to Triple-A Charlotte, where he has a 2.91 ERA over 21.2 innings pitched this season.
Schweitzer is now getting another opportunity. The White Sox have once again called him up and added him to the MLB bullpen, this time designating right-hander Osvaldo Bido for assignment.
Moving on from Bido was a long overdue move for the White Sox. Schweitzer should be able to handle the job as a multi-inning mop-up reliever better than him. There's also potential future upside with Schweitzer, and he's a left-hander, making him the necessary third lefty in Chicago's bullpen alongside Sean Newcomb and Bryan Hudson.
The second half of 2025 was really rough for Schweitzer. He had a 7.92 ERA in 50 innings pitched at Triple-A Charlotte. But he looks like a much different pitcher this season since making the move to the bullpen. He's been productive in Triple-A, he's throwing strikes, and he's looking like an arm that could help the White Sox win games.
The White Sox definitely haven't taken the most efficient route toward solidifying their bullpen. They've churned through relief pitchers all season long, acquiring new arms for innings and then burning through them at the first opportunity in a never-ending game of musical chairs. But as the season has gone on, the bullpen has actually gotten more reliable for the White Sox as they begin to solidify a group of pitchers that can get the job done.
To Chicago's credit, they don't seem to have much tolerance for pitchers who aren't getting the job done. Schweitzer has a golden opportunity on his hands, but it won't be one that's handed to him. As we've seen, if he doesn't pitch well, he'll quickly be replaced by someone else in the minor league system who can. But if he settles in, throws strikes, and does what the White Sox ask him to do, he'll have an opportunity to stick on the 2026 roster and potentially even carve out a long-term role in this bullpen.
Someone like Tyler Davis is a great example of how a brief opportunity in MLB can turn into a solidified roster spot. And if you look at Osvaldo Bido, Jordan Leasure, Tyler Gilbert, Jedixson Paez, and a handful of other names, you can see how volatile relief pitching can be and how short the leash is for a White Sox bullpen arm in 2026.