Alabama is expected to start Austin Mack at quarterback Saturday against Vanderbilt as Keelon Russell recovers from an ankle injury, sources told ESPN's Pete Thamel.
Russell is listed as probable and is expected to be available, though the No. 3 Crimson Tide would prefer to rest him to allow his ankle to heal, Thamel adds.
Mack has attempted only four passes this season, and he's thrown three touchdowns across limited action in his three campaigns at Alabama.
Russell has starred in his sophomore season, completing 67.3% of his passes for 2,263 yards and 18 touchdowns against five interceptions. He's also added 276 rushing yards and five touchdowns.
Alabama improved to 7-2 after defeating LSU last week. Vanderbilt is 4-5.
