Alabama linebacker Christian Harris, a Butkus Award semifinalist, was knocked out of Saturday's game against Arkansas with a shoulder injury.
Harris suffered the injury early in the first quarter and went to the locker room.
Harris will have an MRI done on his shoulder. Saban said after Alabama's 52-3 victory that he didn't know the extent of the injury and that the result of the MRI will determine how much time Harris might miss.
Harris has come on strong as a sophomore, anchoring an Alabama defense that gives up the fewest points per game in the SEC (18.3).
Harris leads the team with 64 tackles and has 2.5 sacks.
Alabama, which is unbeaten and ranked No. 1 nationally, has already locked up the SEC West title and a spot in the conference championship game against No. 6 Florida next Saturday in Atlanta.