John Brebbia
Aside from John Brebbia's ERA (6.26), he has some solid numbers under the hood. Brebbia has always been a good strikeout pitcher, but his 28.3% K% is right in line with the best marks of his career. He has also been good at limiting free passes and has a 7.5% BB% this year. Brebbia's 1.30 HR/9 isn't good, but he has a respectable 7.7% barrel rate, and his 12.5% HR/FB ratio indicates some bad luck.
ERA estimators like his body of work this year. Brebbia has a 3.58 xFIP and 3.12 SIERA. Along with bad flyball luck, Brebbia has a .360 opponent BABIP. The White Sox's defense makes the Pirates' look like they have Gold Glovers at all nine positions. They have -62 defensive runs saved, the fewest in baseball by a margin of 33 DRS. They are also viewed poorly by outs above average at -28 (second worst in the league), and their catchers have been the worst pitch framers with -7.9 framing runs.
Plus, at this point, Brebbia may also play better with a change of scenery. The White Sox are on pace for a historically bad season. They sport an ongoing 20-game losing streak, and have already somehow exceeded the Pirates' 2023 loss total.
The difference between Brebbia and the other names talked about today is that Brebbia isn't a pure rental. He has a team option for 2025, along with a buyout worth $1.5 million. The White Sox might look to shed Brebbia's remaining salary and pin the $1.5 million buyout/$6 million team option on another team.