ACC post-spring position rankings: Secondary Posted May 6, 2016 5. North Carolina: The Tar Heels had the No. 3 pass defense in the ACC last season under first-year assistant Charlton Warren, another sign of the defensive overhaul coordinator Gene Chizik conducted. With almost all the familiar faces back -- including corners Des Lawrence and M.J. Stewart -- UNC could find itself climbing up this chart throughout the season. (ESPN.com)