Factual error: Right after Lance gets hurt and Mox replaces him Mox's first play is a 40 yard pass for a first down after which everyone starts yelling he needs to stop the clock and the camera shows the clock moving. The problem is that in high school football the clock stops on first downs while they reset the chains so the clock should have stopped running until the first down markers were moved and the ref set the ball.
Factual error: During the final game against the Knights, whenever the score is shown on "TV", the Knights' score (home team) is shown on top and the Sharks' score (visiting team) is shown on the bottom. In sports, the visiting team's score is always on top and the home team's score is always on the bottom.
Suggested correction: In American sports yes, but not in other sports. In fact during the 1970's, NBA scores showed the home team score first.
Factual error: In the end credits, the year is given as MCMXCVIX. This is not a correct Roman numeral. It should be MCMXCIX.
Factual error: Kevin Coster's arrival at spring training is set up by a shot of a beach scene with the caption "Spring Training Lakeland Florida". The shot was not filmed in Lakeland and is not at all representative of this town. Lakeland, Florida is located near the middle of the state, and while it does have many lakes, it is not on the ocean. (I suspect this shot was actually filmed in Ft. Lauderdale or Miami, which is at least 200 miles away.) (00:05:56)
Factual error: In the film, Carter leaves the military with service ribbons. In reality, he was discharged after being court-martialed.
Factual error: When they are at the Greek restaurant, there is a writing on the wall in Greek. It reads "ΚΑΤΣΟ ΝΑ ΣΚΑΣΟ" but the correct spelling is "ΚΑΤΣΩ ΝΑ ΣΚΑΣΩ"