The Pirates activated Gonzalez to the major-league roster Saturday.
Gonzalez had been at Triple-A when the White Sox traded him to Pittsburgh on Friday, but he'll officially return to the majors to begin his tenure with the Pirates. He won't be in the lineup for the final game of Saturday's doubleheader, though Injuries to Spencer Horwitz (hamstring) and Konnor Griffin (finger) could open up opportunities for Gonzalez to get starting reps with Pittsburgh.