Quarterback was one of South Carolina’s positions of interest heading into the spring game. Fans have been clamoring for LaNorris Sellers to earn the starting job after flashes of athletic brilliance last season. Robby Ashford, Davis Beville and Dante Reno were all brought in, via the transfer portal and recruiting, to challenge him for that spot. A decision on who will start Aug. 31 against Old Dominion likely won’t be made for another few months. But quarterback play, particularly from Sellers, was key to the Garnet team’s 17-0 victory over the Black team in the Garnet & Black Spring Game Sa…