Factual error: During the movie, which is based in '79, Roy has a Rhino bowling ball. Rhinos weren't made until '85.
Factual error: In one scene, the pitcher has an Atlanta Braves uniform on and the catcher has a Colorado Rockies uniform on. Unless this was an all star game, how could this be?
Factual error: Throughout the entire Varsity/JV game, the Varsity team makes at least 20 penalties that aren't called. They also refer to a tripping call as hooking, even though the Varsity player obviously goes for the JV players ankles.
Factual error: After the New York Kicks start their winning streak, they play against the Suns. The sign outside says, "Knicks vs. Suns - SOLD OUT", but when they take you inside, more than half the seats are empty.
Factual error: On the final hole, the shot that Roy "has" to make is hit perfectly the first time. For some unknown reason, it spins backward off the green. This is patently impossible with a 3-wood. The club just doesn't allow it, and any golfer on the face of the earth knows it. This scene should have been shot with a long iron, a 2 or 3 iron, which is still very hard to hit, but at least possible (for a pro) to put enough spin to back it up.
Factual error: Considering Happy lives on an upper floor, his apartment complex must have the world's fastest elevator. His girlfriend leaves him and is down by the front door in less than 15 seconds.