off the bat of the Los Angeles Angels Erick Aybar on Sept. 5. The 29-year-old pitcher suffered an epidural hemorrhage, brain contusion and skull fracture, then underwent a two-hour surgery.
Last month, the 6-7 McCarthy spent two days undergoing extensive evaluations by renowned concussion expert Dr. Michael Collins at the University of Pittsburgh. He was cleared by Collins to begin working out and resuming his regular offseason routine.
McCarthy was 8-6 with a 3.24 earned run average last season, his sixth in the majors and second with the Athletics.
Overall, he is 37-39 with a 4.02 ERA in 153 games with the Chicago White Sox, Texas and Oakland.