During the black & white instructional dodgeball video an American flag is displayed in the video's background. It is a 50-starred flag and the video says copyright 1954. The American flag had 48 stars until 1959.
In the scene where the team requests an overturn of the chancellor's decision for forfeiture, the crowd begins to chant "Let them play!" The audio doesn't match the hand gestures nor their mouth movements.
After the German team loses in the first round, David Hasselhoff goes to their bench and throws down his picture. You can see that there is no glass in the frame when he is holding it but you hear glass break when the frame hits the floor.
In the opening scene we see a picture of White with the caption "White Goodman 1987", and he says "That's me, six years and 600 pounds ago," as if it's now 1993. But that can't be: the first line of the commentary from the dodgeball tournament says that ESPN8 ("The Ocho") has been bringing viewers obscure sports "since 1999," and Mona Lisa Smile and Lance Armstrong's Tour de France wins are mentioned in other scenes.
During the final match, Justin catches a ball, then Kate comes in and immediately catches another ball. This should result in a four-player swing (two in for Average Joes and two out for the Cobras); however, the announcer states that it is a "three-player swing".
In the game between the Average Joe's and the Skillz that Killz, the film goes to the foot shot when everyone reaches for the balls. In the next frame, the players playing against Joe's that are coming up with the balls are not Skillz that Killz, but the Lumberjacks, who were already defeated in a previous round.
In the match against the Lumberjacks, when the referee asks if Average Joe's are ready, Owen is lined up with his team mates touching the back wall as if he were about to take part in the match. Not only would this mean that Average Joes had 7 players on court, but in subsequent shots of the match taking place, you can clearly see Owen on the sidelines wearing a tracksuit top, having not taken part in the game.
When the treasure chest is first opened, there is a 'Deus ex machina' label on the inside of the lid, but not on the outside. When it is shown again later, the label is on the outside but there is none on the inside of the lid.
When the team is practicing with Patches and the wrenches, Patches throws a bandana to Peter it is unfolded but when Peter puts it up to his head in the next shot to put it on it's folded up already without time to do so.
When Patches first works out with the team, the very first wrench he throws is an adjustable crescent-style wrench. When the player is on the floor writhing in pain, the wrench next to him on the floor is a non-adjustable box-end wrench.
Inside the Dirty Sanchez, a close-up of Peter LaFleur pointing his finger at White shows Peter gesturing with his right hand. Cut to a wide shot, and Peter is pointing with his left hand with no time to have switched hands.
In the scene where White commits the foul by stepping over the line to send the game into "sudden death", they show the replay. In the wide shot on the left it shows White's right foot crossing the line but in the close up shot on the right it is his left foot.
When Average Joe's have their first game, the Qualifying match, they face Troop #417, and when the referee blows the whistle, Justin goes for the ball by sliding on his chest, and he clearly goes past the half line, but in the next scene, he is still playing, and no one has caught a ball.
When Peter is talking to Patches after their first game, a guy in an Orange shirt is seen walking past the door. A few seconds later he is seen again walking down in the same direction without being seen walking back.
White Goodman has clamps attached to his nipples while trying not to eat a doughnut. Me'Shell comes in to tell him Kate is on her way into the office and White tells Me'Shell 30 seconds to get ready. In the next shot, the doughnut and clamps contraption disappears for the remainder of the scene.
Globo Gym and the Kamikazes play each other in the quarterfinals of the dodgeball tournament. Yet close examination of the tournament bracket reveals that the two teams could not have met in the quarterfinals because of their placements in the bracket. Other teams such as Average Joe's, Skillz That Killz and the Lumberjacks share this inconsistency as well.
There are several shots of the crowd that show audience members are 'fake clapping' - hands are coming together with not enough force to be audible (to allow for the audio of the main characters). One of the most noticeable examples is following the scene where White hits Kate in the face with the dodge ball.
In the scene where White Goodman bribes Peter Le Fleur to purchase his gym, he and Mischel open the briefcase to display $100,000. There was a band of 100 one hundreds, which equals to $10,000. The shape and style of the bills were recently minted [error] (larger head) 100 dollar bills.
During Sudden Death Dodgeball, the referee clearly states that both feet must remain in the triangle, however when the camera pans out showing Peter on one knee, his foot is clearly out of the triangle, which would result in him losing the match.
After White gets hit in the face in Sudden Death, he falls to the floor and slides back to the baseline where his body stops parallel to the line. In the very next shot his body is more sprawled out and at a 90 degree angle to the line.