Duval graduated from Auburn as a fifth-year senior with degrees in health promotion and business. During his career, he was selected as a first-team All-Southeastern Conference (SEC) selection as both a kicker and a punter, becoming the first player to ever be named to an All-SEC first team at two different positions. Duval was also recognized as a consensus first-team All-American, having been named to the first teams of the Associated Press, American Football Coaches Association and Walter Camp Foundation as a kicker. He was also a finalist for the Lou Groza Award.