Continuity mistake: When Steve throws the last strike in the World Series, the catcher and umpire are seen getting pushed back a few feet by the power of the pitch. The umpire is seen falling behind the catcher but when the camera angle changes the catcher is seen lying on top of the umpire.
Plot hole: In the World Series game at the end of the movie, the scoreboard shows that the game is scoreless up until the very end. But Brendan Fraser is portrayed as an amazing phenom who hits home runs every single time he comes up. He obviously failed to hit a home run the first few times up in that game.