Harris, a senior and the team's leading rusher, sustained a big hit during the third quarter. Trainers tended to him for several minutes, checking for a neck injury, but found none, according to Saban. Harris did not return to the game.
Harris led Alabama with 83 rushing yards on seven carries Saturday, including a 73-yard run. He has 678 rushing yards this season, with seven touchdowns.
Alabama struggled early against The Citadel, going into halftime tied 10-10 before rebounding in the second half to win by 33.
Quarterback Tua Tagovailoa, who has been dealing with leg injuries for much of the season, passed for 340 yards and three touchdowns. He threw his 31st touchdown of the season, breaking Alabama's single-season record, which was previously held by AJ McCarron.