GAINESVILLE, Fla. (AP) - Florida quarterback Jeff Driskel is doubtful for Saturday's game against Jacksonville State.

Coach Will Muschamp says fellow sophomore Jacoby Brissett likely will start against the lower-division Gamecocks.

Driskel sprained his right ankle in the third quarter of Saturday's 27-20 win over Louisiana-Lafayette and probably won't practice this week. He is wearing a protective walking boot. The seventh-ranked Gators finish the regular season next week at No. 10 Florida State.

Brissett replaced Driskel, completing 6 of 8 passes for 64 yards and a touchdown. He was sacked twice and nearly threw an interception on his first four passing plays. But Brissett rebounded, finding Jordan Reed down the middle for a 39-yard gain and then hooking up with Quinton Dunbar for a 3-yard score to tie the game with 1:42 remaining.