Continuity mistake: When Coop and Remer psyche out Ted together at the beginning of the film, Coop suddenly has a camera with him that was not there before. Also when Coop is taking Ted's picture, he does not have a beer can in his hand, but two seconds later when he is giving Ted the photo, the beer can has magically reappeared.
Continuity mistake: After Coop has missed the third home run, he goes to the hospital with Remer and Squeak to see Joey. When he runs into the Post-op ward and sees Joey lying in bed, a bit of his fringe, in the running, has been swept up onto his head. But immediately in the next shot of him, when it goes to a close up of his face as the nurse says "He keep screaming 'Choke, Choke'.", the bit is no longer swept back, but is hanging neatly.