Sitake and Detmer said Mangum had a strong first day and was considerably ahead of 2016.
Mangum confident as clear-cut No. 1 quarterback for BYU →
"He's explosive, strong, quick, hits the hole, has the speed to break away when he does get out there," Detmer said. "He's one of the best to play here and his yardage shows that and the consistency he's had year in and year out."
Mississippi State looks to rebound versus surging BYU →