Continuity mistake: At the end of the movie, when the Mystery team are consoling each other at the end of the game, the keeper is in the net, after he had been pulled and then stayed off when Mystery tried to score the equaliser.
Factual error: In the end credits, the year is given as MCMXCVIX. This is not a correct Roman numeral. It should be MCMXCIX.
Continuity mistake: When Johnny comes into the Mayor's Office to meet about his place in the Saturday Game, when he sits down there is a large black paper clamp/clip on the desk lying flat, but in the very next shot it is standing on it's side. The Mayor has had his hands folded through the scene and could not have moved it. (00:14:40)
Continuity mistake: In the opening scene with Russell Crowe and his character's two sons, note the youngest boy's bangs. In the first take they are centered in a clump in the middle of his forehead, the scene cuts to Russell Crowe briefly and when it comes back on the boy, his bangs are all spaced out with gaps across his forehead. (00:02:20)
Deliberate mistake: Right after Stevie and Marla attempt sex in his snowplow, the camera cuts to Marla buttoning up 3 buttons on her sweater which takes less than 8 seconds. However, in that same amount of time, making little or no sound to support his actions, Stevie manages to put on his shirt, zip up his pants, pull back up his coveralls, re-Velcro them closed perfectly all the way up to his chest, pull up and reposition the suspenders to the coveralls and be sitting calmly with both hands on his thighs when the camera cuts back to him. In less than 8 seconds, all silently and not moving the cab to the snowplow at all, no way. (00:32:20)
Continuity mistake: When Marla's mother enters her bedroom to see why Marla is so upset, note the blue, yellow and white plaid blanket on the chair by the radio. In the first show it is hanging uneven with a portion folded back over, they cut to Marla for just a few seconds and when they cut back to the blanket it had changed and is now folded perfectly on the chair. (00:44:05)
Continuity mistake: During the scene where John and Donna are on the pond discussing the decision to build boards around the pond for sponsorship, it is snowing noticeably much harder when the camera is on John compared to when it is on Donna, where the snow is barely visible. (00:52:00)
Continuity mistake: At the end of the game against the Rangers, as the Mystery team is going for the tying goal, you see the Ranger goalie way out of position to the one side of the goal as Russell Crowe passes the puck back to Connor near the blue line. In fact, you see the goalie start his "dive" across the front of the net before Connor even receives the pass. We then see a shot from behind the net of Connor receiving the pass and that from this angle we can see that the goalie is in his normal spot in front of the goal, it then cuts to a shot of the goalie from the front where he is also in the middle of the net drifting back toward the goal in perfect position, but when Connor actually takes the shot, the goalie is back off to the one side of the goal trying desperately to dive across to make the save.