Major league home run leader Adam Dunn is out of the starting lineup for Chicago's game Saturday night at Detroit because of a strained oblique.
White Sox manager Robin Ventura says he's sitting Dunn as a precaution, but the slugger could potentially pinch-hit. Dunn has 38 home runs.
Chicago leads the Tigers by two games atop the AL Central.
The White Sox also reinstated catcher Tyler Flowers from the paternity list, recalled right-hander Deunte Heath and right-hander Brian Omogrosso from Triple-A Charlotte, purchased the contract of infielder Dan Johnson from Charlotte and reinstated infielder Orlando Hudson a and left-hander Leyson Septimo from the disabled list.
Ventura says outfielder Alejandro De Aza, out with bruised left ribs, is likely to rejoin the team Sunday.