Soma Vainuku is listed as a fullback, but in USC's new fast-paced offense he does not figure to be utilized much in the position's traditional mold.
The junior from Eureka is playing a utility role, working at running back, tight end and also on special teams.
"Fullback and tight end kind of go hand in hand," Vainuku said.
Vainuku rushed for 70 yards and a touchdown playing tailback last season against Colorado.
He said he still calls on lessons learned from former Trojan Rhett Ellison, whose versatility as a tight end and fullback helped launch an NFL career.