Continuity: When the Owls are playing for their district championship, the other team's best batter comes up in the last inning. As he is walking to the plate, he is wearing Nike shoes, but when he digs into the batter's box, his shoes are Reebok.
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Mistakes
In the scene where the Owls are practicing in the gravel yard and Dennis Quaid is pitching for the team's batting practice and Jay Hernandez almost hits the ball, you can see when he throws the ball that the ball is actually still in his glove. See more...
The Rookie mistakes
Factual error: In the final inning of the district championship game, the Owls are ahead by one run and there are two outs when the opposing team's top hitter steps up to the plate. This is impossible because this batter was the final out in the previous inning when his team came to bat. That he bats at all in the final inning with two outs means his team would have batted around the order and scored at least 3 runs in that inning already and had the lead.
Revealing: In the scene where the Owls are practicing in the gravel yard and Dennis Quaid is pitching for the team's batting practice and Jay Hernandez almost hits the ball, you can see when he throws the ball that the ball is actually still in his glove.
The Rookie trivia
When Jim is making his debut at The Balkpark in Arlington, the Devil Rays are wearing their current jerseys. Their current jerseys came out in the 2000 or 2001 season. The movie was shot in 1999 when they had different jerseys. However, at the end where the shot is of Jim's D- Ray's jersey is hanging at the high school, it is a 1999 hat and a 2000 or 2001 jersey. Tampa Bay never had that jersey combo.