Barrett Trotter's injury in Thursday's practice appears to be more than minor. The redshirt freshman suffered an ACL injury to his left knee, an Auburn spokesman confirmed tonight.

Although quarterbacks were live during the scrimmage, meaning they could be hit and tackled to the ground, Trotter's injury was of the non-contact variety, according to the spokesman.

Trotter had been in a three-way battle for the starting quarterback job with Kodi Burns and Neil Caudle throughout the spring. But he recently had his reps reduced in number to more evenly split them between Burns and Caudle.

It is unclear how long Trotter would be out. If it is a tear, the general timeline for a recovery is around six months, which would take him into mid-October.

The only other scholarship quarterback currently on the roster is senior Chris Todd, who is still recovering from offseason shoulder surgery. Walk-on redshirt freshman Brent Poole will be the third quarterback to play in Saturday's A-Day scrimmage.

The Tigers have two scholarship quarterbacks expected to arrive in the fall — Tyrik Rollison and Clint Moseley.