Pelfrey warmed up in the bullpen two days after throwing 45 pitches in a start, Paul Skrbina of the Chicago Tribune reports.

EDGE Analysis

Pelfrey said it was his normal between-starts throwing day and that he was preparing in case the White Sox needed him to pitch in relief, however, seeing one of Chicago's starting pitchers warm up in the bullpen fueled speculation that the White Sox are preparing to call up one or more of their young starting prospects from Triple-A Charlotte. If not in time for Pelfrey's next scheduled start Tuesday, Reynaldo Lopez and/or Lucas Giolito are expected to be called him soon.