USC head coach Clay Helton will assume play-calling duties the school announced on Monday. Offensive coordinator Tee Martin will remain in his role, "assisting with the weekly organization of the practice and game plan and assisting on game days," per USC.
Helton served as USC's offensive coordinator from 2013-15 before being named head coach midway through the 2015 season.
Helton's move to call plays wasn't the only shake-up to USC's offensive coaching staff on Monday. The Trojans relieved offensive line coach Neil Callaway of his duties, ending his tenure with the programs after three seasons.