Mack Brown Pushes Instant Replay Reform After Virginia Tech Loss Posted Oct 22, 2019 Less than a week removed from advocating for greater instant replay utilization, Mack Brown expressed further frustration with the current process after a pair of questionable penalties and a non-call went against UNC in Saturday’s six-overtime loss at Virginia Tech. None of the three plays were reviewable despite coming at critical moments in the game. (Inside Carolina)