During one of the final scenes, when Cody and Bea are in the backyard, Cody has a bandage on his chin, and Bea makes reference to it as a mark from battle, except Cody never got injured during the games, and this bandage doesn't show up in any previous or following shots.
In the final game, there would have not been a triple-play, due to the infield fly rule. The ball hit was a line-drive to Cody and was not caught with "ordinary effort"; thereby a runner would have scored, tying the game.
There are visible palm trees in many of the baseball scenes. There are no palm trees in Des Moines, Iowa.