Continuity mistake: When Nigel, the Welsh place kicker for the Sentinels, sets up to make his field goal for 65 yards he is seen flicking his cigarette off to his right. The scene changes to the bar (where you see him flick it again on the T.V.) then back to the field and you can see the cigarette back in his right hand.
Continuity mistake: In the first game that they play, the Sentinels receive the kickoff, the shot of the guy catching the ball was from a far away view, then on the next kick off its an up close view of the player catching the ball but if you notice, the player does the exact same thing in both catches. Which means that they put the same catch in there, just different views of it.
Continuity mistake: In the final game, the running back hurts his knee. Two plays after that, Reeves is running with the ball. Throughout the run, the ball switches back and forth from being carried in his left arm to his right arm.
Continuity mistake: Watch the Chinese spare rib in Jamal Jackson's hand while he, his brother Andre, Jumbo, and Nigel are eating after the first practice. He throws it down, then in his next shot, he is eating it again, then it switches to an overhead, where he's not eating, then you see him again with it back in his hand.
Continuity mistake: When the placekicker sets up for the long field goal, they show him flick his cigarette away and blow smoke twice. Once after he has initially set up, then again after they cut to the guys he owes money watching him on TV.
Factual error: After the onside kick, they did NOT return for a big gain. Bateman tried to keep running with the ball, but Falco (who as quarterback shouldn't even be on the field during this play) tackled him. While Bateman was running with the ball, he just kept going back and forth near the line of scrimmage and didn't advance.
Factual error: The NFL rules for an onside kick state that only the receiving team may advance the ball. If the kicking team recovers the ball, then the play is blown dead and the recovering team goes on offense from that spot. This would mean that when Falco having to call a timeout after he tackled Bateman running around with the ball wasting time would not have actually happened in a real NFL game.
Factual error: The clock would stop once an onside kick is blown dead, meaning there would be no need to waste a time out. The first onside kick attempted by the Sentinels, they recover the ball and are down by contact. This should have blown the play dead and automatically stopped the clock, but McGinty calls a timeout to "stop the clock." This wouldn't happen in a real NFL game, even back when this film was made.
Factual error: It appears the movie roster of replacement is made up of 22 players (23 if you count the kicker). This is evidenced by Falco being cut once Martel crosses. This would not happen in the real NFL. NFL rosters carry 53 players, with 45 typically active on gameday. Falco, even on a replacement roster, would not be the only QB on the roster, nor would he be cut if he was because another QB joined the team. Teams usually carry two QBs minimum, if not three.
Factual error: The clock would stop on an incomplete pass, rendering the use of a timeout in that situation to stop the clock pointless. They call timeout after Falco throws incomplete to Franklin, which would not happen in a real NFL game unless the coach or a player needed time to call a play or get their signals straight.