"I know Daunte's excited about it. I could tell when I told him. He's very excited to get a shot so we'll see what happens."
Culpepper will be the third different quarterback to start for the Raiders this preseason. McCown started in the preseason opener against Arizona, while Walter was the starter against San Francisco.
But Culpepper, who signed with the Raiders early in training camp after being released by Miami, has outplayed the other two. In the two games the 30-year-old veteran quarterback is 11-of-20 for 153 yards and two touchdowns, and has a rating of 113.1.
Where Culpepper has struggled is in taking care of the ball. He's fumbled four times in the two games, three coming off of snaps from center Jeremy Newberry.
"I'm looking for him to take care of the ball and move the offense," Kiffin said. "We want to score points. We don't want to give it up. He's been very good at that as far as throwing it. Now we gotta get the snap from center and make sure that that doesn't happen for the second game in a row.
"This competition, as I said a long time ago, and they know, it's going to be about guys that make the right decisions. It's not going to be about the biggest arm or the best stats. It's going to be about the guys that make the right decision, put us in position to score and don't give the ball to the other team."
Kiffin declined to say if he would name a permanent starter for the regular season after the game against St. Louis.
"I don't know that," Kiffin said. " We'll evaluate this game and maybe we'll go into the next game and have to continue but I'd like to."