The University of Louisville football team has already played three quarterbacks - and started different signal callers - in the first two games of the season.
U of L head coach Bobby Petrino could roll out a third starter on Thursday night.
Sophomore Kyle Bolin, who started the season third on the depth chart, finished the Houston game on Saturday and might get the start against Clemson on Thursday. Petrino said on Monday night he believes he knows who will start but wouldn't name a starter.
"I think I know who the quarterback is," Petrino said. "But we told them they would get their reps in practice, we would grade the reps, and I haven't had a chance to talk to the quarterbacks yet, so obviously I'm not going to tell anyone else before I talk to them.
"The other day we came out of the Auburn game and we felt like Lamar (Jackson) gave us the best opportunity. But (Houston) did a nice job on defense on securing the edges and forcing him to throw the ball."
Jackson, a true freshman, started the Houston game and threw two interceptions and fumbled twice in the 34-31 loss. Sophomore Reggie Bonnafon started the opener against Auburn but had a fumble on an exchange with running back Jeremy Smith.
Bolin was 10 of 18 for 157 yards in the second half of the Houston game. He came in and led the Cardinals to victory last season against Kentucky and started the bowl game against Georgia. Will Gardner is the fourth quarterback and was the starter last season until he suffered a season-ending knee injury.
"I felt like Kyle gave us the best chance to operate the offense that could get us back in the game (against Houston)," Petrino said. "He came in and did a nice job with it, just like he did against Kentucky. He hits hands, and he executed what we asked him to do in that part of the game. I think he's had a good week of practice, as have the other ones."
Petrino said he would grade the film tonight with his offensive staff and then inform the quarterbacks.