The White Sox recalled Peguero from Triple-A Charlotte on Sunday.
Claimed off waivers from Milwaukee last weekend, Peguero was optioned to Charlotte but will now move up to the majors after making just one Triple-A appearance. The 28-year-old righty previously made six appearances out of the Milwaukee bullpen this season, logging a 4.91 ERA and 1.64 WHIP over 7.1 innings.