Audio problem: When Knox shouts "You blind as a horse's ass" later on in the movie, his lip movements don't match with what he's saying.
Factual error: Roger's dad says when the "Angels win the pennant." During the last final scene/regular season game, after the win, Ranch Wilder announces that "the Angels won the pennant." They would have to have won the American League Championship Series in order to win the pennant.
Other mistake: In the championship game at the end, Ray Mitchell hits a two run homer to tie the game. As Mitchell is crossing home, he never touches the plate.
Continuity mistake: Throughout the movie, the angels used two different stadiums. They used the Big A (as that is what it was called in 1994), then they also used the Oakland Coliseum as well.