Revealing mistake: During the fight scene, when Jake gets out of the car to fight the three guys in the yellow Hummer, Max lifts up his video camera after Jake throws his first punch. But after the fight, when all of the students are watching the fight on the net at school, it shows that Max is recording before the fight even begins.
Revealing mistake: Throughout the racing shots of the movie, the close up shots of the fans in the stands show the same people used multiple times as evident by them wearing the same clothes, poses, etc.