Other mistake: When Don and his father are driving home and Don's father throws his ring out the window, Don gets out to search for the ring and you can see wet marks on his shins from kneeling on the wet road. However, he hasn't knelt down yet. It must have been from previous takes. Also, when he gets up after kneeling down, his jeans are dry. (01:01:50)
Factual error: The prescription drug container is dated 12/20/03. The movie takes place in 1988. (00:01:30)
Continuity mistake: When Miles cleans out his locker he stuffs his "dominator" white towel in the front of his pants. A few shots later after he says "play your ass off, win state, be perfect, all that sh*t" he turns around and faces the camera. The towel is no longer there. A few shots later when he is shown going to his car the towel is once again tucked in the front of his pants. (01:10:25)
Continuity mistake: When Boobie gets in the car after clearing out his locker the car window is very dirty and spotted, but a few seconds later the camera shows the window again and it is perfectly clean and spotless. (01:11:45)
Continuity mistake: When Boobie Miles receives his diagnosis from the Midland doctor, he gets upset and rips the x-ray film of his injured knee off the wall. In the next shot, he rips it down again.
Answer: I can only think of two possibilities. It could be that 'taking a knee' is not allowed in this division's rules. Or, getting into the heads of the coaches, their philosophy of the game could be to gain as many points as possible even in a lopsided blowout, honoring the game and continuing sportsmanlike competition to the end.