The White Sox optioned Peralta to Triple-A Charlotte on Saturday.
Right-hander Davis Martin will take Peralta's place on the active roster. In his three major-league outings after being called up from Charlotte on July 20, Peralta allowed one run on five hits and three walks while striking out four across 5.2 frames. Across 18 appearances with Charlotte this year, Peralta holds a 1.08 ERA and 0.74 WHIP across 16.2 innings.