Continuity mistake: When Tweeder blocks the punt against Gilroy, it shows him running and putting his arms up in one shot. In the next he's in mid-air. (01:35:10)
Continuity mistake: In the whipped cream bikini scene, when Mox pulls back from kissing the cheerleader he has whipped cream on his shirt. In the next shot it's not there.
Continuity mistake: When Tweeder is puling up to Mox at the convenient store he has 3 girls in the car with him. if you look closely when he is driving down the street there is only a driver and no girls in the car.
Continuity mistake: In the last game during halftime the team rebels against coach Kilmer (Jon Voight) and leave. This leaves Lance to be the head coach, but what about the other coaches? They didn't leave with Kilmer - where did they go?
Continuity mistake: In the closing game, the score of the game is 17-7 but when Moxon is coming to the line, the score on the scoreboard is 14-7.
Continuity mistake: When Billy Bob is holding a camera when tweeter is about to hit the guy from the class of 1980, if you look towards the right, you see that Coke and Sprite cans are on opposite sides of the table. After the guy from the class of 1980 gets hit and the camera goes back to Billy Bob, you see that both of the cans are together and are on the other side of the table.
Continuity mistake: When Lance gets tackled and tears up his knee his shoulder pad is sticking out of his shirt at one point then it is back in then back out again.
Continuity mistake: In the seen where Mox runs the "oopty-oop" in practice, Coach Kilmer comes out and starts yelling at Mox. Kilmer grabs Mox's face mask. His hand moves from holding the top to holding the bottom and back to the top again.
Continuity mistake: In the practice where Mox runs the "oopdy oop" Tweeder is thrown a pass right before Mox takes the field. If you look closely he drops the pass as he is falling.
Continuity mistake: When Billy Bob is knocked out on the field and his team-mates crowd around him if you look closely someone has the #4 on,but that can't be because Mox hasn't arrived yet and never had his helmet on.
Continuity mistake: During the scene where Lance and Darcey are having sex on the drier, when Billy Bob comes in to throw up they show her in one scene with her top down and in the very next with her top up but she hasn't changed positions.
Continuity mistake: When Darcey reaches in the cabinet to get the Sundea glasses she clearly has on flip flops. After going into the kitchen to put on her "whipped cream outfit" she comes out and in the reflection of the gun case where Mox is looking, if you look down at her shoes as she is coming out, she has on tennis shoes - you see her laces from the shoes flopping around as she walks.
Continuity mistake: Toward the end, when Mox is about to lead the revolt against the coach, he completely loses his accent. Its especially noticeable when he is persuading one of the players not to take a painkilling injection.
Continuity mistake: When Jon Moxon is sitting on the bench during the Bingville game, reading the novel inside the playbook, the player standing in front of him (wearing a white baseball cap) is named Symonds, and is wearing the number 68. During the halftime of the Gilroy game, right after Moxon rallys the team with his speech in the locker room, Symonds is now wearing the number 9 (he jumps right in front of Moxon). When the players return to the field after the locker room rally to start the second half against Gilroy, during the opening kickoff, Symonds is again wearing the number 68.
Continuity mistake: When Billy Bob is drunk and shooting his trophies, one of the trophies he throws changes after it hits the ground.
Continuity mistake: During the game, when Lance gets injured, Mox has to throw the ball to stop the clock. You can hear the announcer say "the clock's still running, the clock's still running" Later in the film where Mox has to stop the clock again, you hear the same announcer say the exact same thing but in a complete sentence, meaning they used a portion of the sentence for earlier in the film.
Continuity mistake: During the last game when Lance is coaching, in one scene he has the headset around his neck, then on his ears and then no headset, and the on his neck and it continues this way for quite a few scenes.
Continuity mistake: When Tweeter drives up to Mox at the convenience store, he says the girls in the car are naked, but if you look closely you can see that the girl in the front seat has a pair of jeans on.
Answer: There's no rule in any sport, at least none that I could find, that requires a team to have, or listen to, a coach. Obviously in most cases it's a good idea, but if the coach were poor and/or working against the interests of the team, the players wouldn't be breaking any rules by simply ignoring them and listening to someone else.