The White Sox announced that they have outrighted reliever Javy Guerra to Class AAA Charlotte.
The White Sox originally claimed the 28-year-old Guerra off waivers from the Los Angeles Dodgers on Wednesday.
Guerra has a career 4-5 record with a 2.90 ERA, 87 strikeouts and 29 saves over three seasons with Dodgers.
Guerra will report to the White Sox spring training facility in Glendale and join the Knights roster.
The White Sox 40-man roster now stands at 39.