Athletics' Jharel Cotton: Undergoes debridement procedure

Cotton (elbow) underwent right hamstring debridement surgery Thursday, Susan Slusser of the San Francisco Chronicle reports.

This comes after Cotton -- who was working his way back from Tommy John surgery he underwent in March of 2018 -- was pulled off his rehab assignment earlier in the month with a hamstring injury. The A's have yet to announce an updated timetable for Cotton's return at this point.