In the food fight scene, Iron Maven throws a french fry onto Bliss' face. Bliss pulls the fry off leaving a smear of ketchup and then tosses banana cream pie at Iron Maven. When Maven retaliates by dumping a chocolate shake onto Bliss' head, the fry is back on her face.
When Bliss finishes her last round in the first game she plays, she wears the star sash for being a jammer, then the game stops and she is shortly shown having an "honor round" without the sash, then has the sash again for the team reunion.
During the championship game, Drew's character is the jammer (has the star sash on her helmet.) After scoring points, the team regroups and a different character is seen removing the sash and giving it to Ellen's character.
In the scene where the girls first start following Razor's play book, The last play they run is the Whip. Before any setup is done for this play that would let the crow know what was coming, the crowd is screaming "Whip It!"
In several parking lots, multiple parked cars do not have front license plates. Texas requires cars to have front car license plates. But Michigan, where the film was shot, does not have front car license plates.
At one point in the movie, the opposing team does a roundhouse punch and knocks down all the members of the team. Any type of violence in Roller Derby (punching, kicking, fighting) would get a player expelled from the game, but the opposing team doesn't face any such reprimanding whatsoever.
In an early scene shot from the air, an interstate highway sign pointing the way to Austin has white arrows incorrectly pointing down instead of up. However, this appears to be an overhead sign from an interchange, indicating which lanes one should to use to get to Austin. It was likely borrowed and placed along an interstate in Michigan where the film was shot, to provide the effect that the characters were in fact on their way to Austin.