Mack served as the head football coach at North Carolina Central University from 2014 to 2017, compiling a record of 31–15 in four seasons.
He was the offensive coordinator and associate football head coach at Rice University prior to his hiring at Tennessee.
[4][5] Within his four seasons at North Carolina Central University as the team’s head coach, he led the Eagles to a berth in the 2016 Celebration Bowl.
He was named the 2016 HBCU Football Coach of the Year by Black College Sports Page[6] and The Pigskin Club in Washington, D.C., following NCCU breaking its school record for offense on its way to the Celebration Bowl.
[12] On December 1, 2024, Mack was named head coach for the Kennesaw State Owls football team in the Conference USA.