The Chicago White Sox made one of the best waiver claims of the season in June of 2019 when they got Jimmy Cordero from the Seattle Mariners (MLB Trade Rumors).
Cordero, 28, went on to make 30 relief appearances with the South Side down the stretch and registered a 2.75 ERA, 0.972 WHIP, 3.74 FIP, 7.8 K/9, and 2.8 BB/9.
While his previous track record at the major league level didn’t impress as much, there’s no reason to believe that performance was simply a fluke.