Continuity mistake: Phil sustains injuries to his face more than once in the movie. Every time the injuries disappear by the next scene. In one case the injury switches from the right side of his face to the left side between shots in the same scene.
Continuity mistake: When Will's dad has thrown all his darts, he grabs the darts off the board and he and Will begin to chat. The dad throws one dart at the board again, but in the next shot there are two darts on it rather than one.
Continuity mistake: In the scene where Phil and his wife are in the bedroom after Phil accidentally gets hit by Ditka, Phil's wife leads him to the bed and begins to rub his shoulders, then it cuts to the front of Phil and his wife's arms are down around his waist.
Continuity mistake: Mike Ditka sets his coffee cup on the counter during the first butcher shop scene. When the camera angle changes, the cup is back in his hand without time for him to have picked it up again.