Continuity mistake: During the final game when Justin is by himself, you can see Owen sitting on the bench without his track suit. When he throws the ball at White you can quickly see in the background Owen is standing behind Justin with his track suit on. Few shots later it cuts back to the bench and he is sitting down with the rest of the team with the uniform minus the track suit.
Continuity mistake: When Peter first leaves his house near the beginning of the movie, he throws his empty bottle at a lawn chair, and it bounces off onto the ground. In the next shot, when he drives away, you can see nothing on the ground and what looks like the bottle now lying on the chair.
Continuity mistake: In the scene when Gordon gets angry seeing his "mail order wife" with another man you can see the dancers in the background, behind Gordon, just standing around. When the camera pans out they are all dancing and celebrating. When it cuts back to Gordon they are just standing and leaning against the pole.
Continuity mistake: When Gordon is talking to Peter about the OSQ magazine about midget tossing, right before Gordon hands him the magazine, Peter has an orange juice carton in his hand. In the next shot you see him holding the magazine with both hands empty, with not enough time to get rid of the orange juice.
Continuity mistake: In the first scene that Vince Vaughn goes to global gym to confront Goodman, Vince and Ben are talking to each other. During the conversation, you can see a woman working out on a fitness machine behind Vince. When the shot widens as they are leaving, neither the machine nor the woman is there.
Continuity mistake: In the final showdown after Peter knocks White down, his team rushes on to congratulate him. At first the court is clear behind Peter, but when the team rushes on there are a lot of balls behind him. In the same scene, there is a large, black box with skulls and crossed bones on it that isn't seen in the wide shot.
Continuity mistake: When Peter meets Lance Armstrong and they are talking, Lance has a bottle of water in his hand. As the camera keeps changing shots from Peter to Lance, the bottle of water changes back and forth from having a cap on it to not having a cap on it. There's no time for Lance to have taken it off and put it on that many times.