The final softball game is filmed on both overcast and bright sunny days.
When Mary Lou runs out of the beauty parlor and later gets picked up hitch-hiking, she does not have a purse. However, when she arrives at the bar a few minutes later, she's carrying a large white purse (which she uses to hit Buddy with and then throws at one of the bathroom stalls).
The order of the women on stage for the wet t-shirt contest changes several times.
During the conversation between Samantha and Mary Lou in the bar restroom, Mary Lou wears a pink flower in her hair. There was no flower in her just moments before when she first entered the bar.
Rose (3rd base) wears a form-fitting shirt throughout the game until just before she removes it to go topless (except for pasties) - she's suddenly wearing an extra-large shirt (making it easier to remove).
When Jamie is using the weight machine during the team's workout sessions, she goes from barely being able to move the bar to being able to easily move it, presumably due to the training. However, weights are removed between the two shots, which is the real reason it's easier for her to handle.
When Samantha gives Mary Lou her keys during the wet t-shirt contest, her lips do not match the words she says.
When Koch is confronting Mary Lou and says that doing Bogey is the only fun he has in his job, the shadow of the boom mic can be seen on the wall behind him.