Gene Chizik opens up on the differences from his first stint at UNC to now Posted Jul 11, 2022 Gene Chizik was struck by the difference when he arrived as UNC's defensive coordinator in January. Chizik was previously the Tar Heels DC during the 2015 and 2016 seasons, so there was plenty he was already familiar with. But UNC had undergone a coaching change from Larry Fedora to Mack Brown. So there was also a lot that had changed. (On3.com)