Continuity mistake: When Adam Banks is playing in one of the games, he scores a goal and his teammates on the bench stand up and cheer when he scores. Problem is, Adam Banks is on the bench too.
Revealing mistake: There is an obvious stunt double for Grandpa during the fight scenes.
Continuity mistake: In the first scene in Woody Harrelson's flat, Rosie Perez is in bed. Her top falls down, all but showing her breast; but in the next shot, she has covered herself up, but without moving her arms.
Visible crew/equipment: After the Peaches are introduced at their first game, they run onto the field. If you watch the background carefully, Rosie O'Donnell clearly trips over a production wire. (00:35:50)
Continuity mistake: Toward the end of the movie when the Dragons are facing the Giants for the Pennant, Hammer is up to bat and get a hit. When you see him round first base, they show a picture of the dugout, where you will find him holding a large hammer. It's tough to be at bat and on the bench.
Factual error: During the movie, Doug watches video from the previous Olympic competition. The skaters are shown performing in a darkened arena lit by spotlights. Special lighting effects like this are not allowed in competition. All competitions take place in a brightly lit arena.
Continuity mistake: When Chester is trying to get Matthew to come into his car after school, Matthew has a football in his hand for a couple of shots. Then, the football disappears and his replaced by his backpack for the last shots of the scene.
Factual error: In the game at Pittsburgh, when Ruth hits three home runs, the first two were hit off Guy Bush. When he comes to bat the last time, Guy Bush is still pitching. This was not the case. Red Lucas was the pitcher, and he gave up Ruth's last home run.
Continuity mistake: Sloan's pants change from blue to white after he is captured attacking Lane's house.
Factual error: In the scene where St Matthews is Playing St Luke's in Football you can ADAMS printed on the chin strap of Matt Damon's Helmet. This movie was set back in the 40's or 50's and Adam's was not making those chin straps especially with ADAMS printed on the strap for many years to come.
Continuity mistake: At the end of the movie Gabe and Roy are sitting in the bleachers and Roy is wiping his forehead with a towel as Gabe starts talking to him. The camera zooms in and Roy now has his arms folded on top of the towel with his legs crossed.