UNC's Offensive Line Searching For Leadership Posted Apr 20, 2018 Former North Carolina offensive linemen Bentley Spain and Cam Dillard both are gone, so a unit that must have strong leadership as part of its chemistry building process is searching for a vocal front man or two. And with William Sweet still rehabilitating from a knee injury last September, fast-improving Charlie Heck might be stepping into that role for the Tar Heels. (Tar Heel Illustrated)