Towards the beginning of the movie when Harry is wheeled out after his x-ray, his mother is crying over him. But more than once you can hear her sobbing, but plainly see that she's just standing still and looking at him.
Early in the movie, a poster showing the Browns schedule appears. The Washington Redskins are listed as the opponents for a game on December 5. However, later in the movie, mention is made (in connection with the planned Harry Hinkle Charitable Fund announcement) of the game against Washington being scheduled for November 27.
When Harry is injured, his camera flies out of his hands and the cables are missing. In the previous scene, the cables were shown attached using a screw-in type connector that would not have come off, even when being tackled.