Continuity mistake: When the selected team members are announced, we see Mae and Doris hugging each other in rejoice. About one second later Kit is shown rushing through the crowd, and we now see Mae and Doris standing about two meters apart from each other, both facing towards the notice board, with a couple of other girls standing between them.
Continuity mistake: During the championship game Kit is pitching for Racine and her sister Dottie hits a line drive that almost "takes her head off". Later when Kit goes to the dugout, a closeup shot shows her sitting with a jacket on her right arm crying and freaking out because Dottie got the best of her once again. But in the next shot, Dottie comes walking out behind the plate to catch, looks over at Kit who is still crying in the dugout, and the jacket is no longer on Kit's arm as it was just a second before.
Factual error: One of the stadium banners reads "Catch A Foul - Get A Kiss"; it is printed in the font Banco, which was created in 1951, eight years after the film is set.
Factual error: In the final inning of the last world series game, Dottie is seen catching a pop up as she falls into the dugout. You see the ball go into her glove and then, before she even hits the ground in the dugout, the ball has moved to her throwing hand. There is no way a catcher would even attempt to transfer the ball from their glove hand to their throwing hand while falling like that.
Continuity mistake: When Jimmy is shouting at the team members to get on the bus, we first see Evelyn and Doris in the background while they are descending the stairs of the hotel entrance and hurrying on the pathway towards the vehicle. Then the camera angle changes, and we now see them from a close distance descending the stairs again.
Continuity mistake: In the movie Ellen Sue (she played short stop and was a pitcher) was #1. You can see it on her uniform throughout the movie. At the very end when they are showing credits it shows pictures of the girls playing ball. On the back of Ellen Sue's uniform is shown #2. (00:35:50 - 01:59:25)
Factual error: In some scenes during the games, the sun is in the direction of right field shining towards home plate. In professional baseball games, this is never allowed due to the sun being in the batters eyes. Side note: This is why no ballpark in major leagues ever had home plate on the east side of stadiums when they were built.