Jake Diekman, a left-handed relief pitcher, is set to join the White Sox bullpen.
Diekman, 35, has a 4.23 ERA, a 4.62 xERA, and a 4.97 FIP in 38 1⁄3 innings this season. FanGraphs, which uses a FIP-based formula to calculate pitching value, says that Diekman has been worth -0.5 WAR in 2022. Throughout his career, though, Diekman has accumulated 5.1 fWAR by having a 3.58 FIP.
With Aaron Bummer and Garrett Crochet on the injured list, the White Sox have been in need of a reliable left-handed pitcher.