UCF sophomore quarterback Darriel Mack Jr. did a terrific job in 2018 stepping into the starting role when McKenzie Milton was unable to play. Mack led the Knights to a win against ECU in October in spot duty, but then was called into action full-time after Milton suffered a horrific leg injury in the regular season finale against USF.

However, with Milton still sidelined, Mack was likely heading into camp with a competition on his hands to start for the Knights with incoming Notre Dame transfer Brandon Wimbush. But according to UCF, Mack suffered a broken ankle in a non-football related activity and will miss all of camp with no timetable set for his return to action.

Mack led UFC to a win in the American Athletic Conference championship game before a 745-day streak of defeat-free college football came to an end with a 40-32 loss to LSU in the Fiesta Bowl.