Oakland Raiders head coach Dennis Allen has admitted that he is still unsure over who will be his starting quarterback for the upcoming season.

The Raiders traded for Matt Flynn from Seattle Seahawks but he has struggled in pre-season with backup Terrelle Pryor breathing down his neck.

Allen told reporters: "I think obviously we have to look at it. I think when you look at it I don't think Matt played well in this game. Obviously, I thought Terrelle came in and gave us a spark. I thought he played well in the game.

"I think that's something that we have to go and look at it. I'm not going to make any decisions on anything, obviously, tonight.

"I want to get a chance to go back and look at the tape and see how things went. But it was obvious that Terrelle gave us a little bit of a spark tonight."

Oakland face the Indianapolis Colts in their opening regular season game.