During the scene where Dottie's parents are listening to Maida Gillespie's radio broadcast, you can see in their magazine collection the Life magazine on which Dottie is on the cover doing the splits while catching the pop fly. That doesn't happen until later in the movie.
When all the girls must find their names on the list, we see Doris and Mae hugging each other because they both made the team. In the next shot, while Kit is pushing through the crowd to tell Dottie she had made it, she pushes by Doris who is still waiting to see the list.
When the girls are at the Suds Bucket roadhouse we can see Ellen Sue on the floor dancing. When they cut away to show a boy kissing Kit on the cheek you can see Ellen Sue sitting down behind her, but when they cut back to the dance floor Ellen Sue can still be seen dancing.
On the teams lists after tryouts, Dottie's name does not appear on the list for her team the Rockford Peaches.
The ball that Dottie hits that causes her sister to jump to the ground is shown being scooped up by the center fielder twice.
The end of the film notes that the players of the AAGPBL were "the first women ever to be inducted into the Baseball Hall of Fame." Actually, they are not inductees. Rather, they were recognized with a permanent exhibit in the National Baseball Hall of Fame and Museum, entitled "Women in Baseball," in 1988. The first woman to actually be inducted into the Baseball Hall of Fame was Effa Manley, the co-owner (with her husband, Abe) of the Newark Eagles. She was inducted in 2006.
When Mae (Madonna) catches the ball in her cap, it's not an out. A player can not use any part of the uniform to trap or catch the ball. Other than the pitching delivery (underhand), size of the diamond (smaller), and size of the ball (larger), the rules are the same in the AAGPBBL as it was in MLB.
The pitchers are clearly seen using an overhand delivery. But the movie takes place during the AAGPBL's first year, 1943, when the game more resembled fast-pitch softball than baseball and an underhand delivery was used. Overhand pitching wasn't accepted as standard in the league until the late-1940s.
When Dottie and Kit first meet Mae and Dorris at try-outs, Kit looks around and comments, "Are all these girls going to be in the league?" It is then revealed that out of the 100 girls that were at try-outs, only 64 girls would be selected to make up four teams of 16 girls. 32 girls received train tickets home. During the actual 1944 AAGBL try-outs in Chicago, scouts sent 280 girls to the try-outs, but only 60 girls were selected to form four team of 15. 220 girls were given train tickets home.
The 1943 AAGPBBL world series was 5 games long, not 7 as it was in the movie.
During the closing credits, while showing black and white images of characters in the film, a head shot of Megan Kavanaugh (Marla Hooch) comes on screen. If you look closely, she's wearing a "City of Racine" jersey. This seems to be an error as she played for Rockford in the film. However, there was a scene cut from the film showing Marla returning to the league after her marriage. She ends up being placed on the Racine team and she is seen wearing their uniform. The girls learn that Marla is pregnant and subsequently after being slid into she is forced to stay out the rest of the season until the baby is born. These cut scenes are available on. The DVD.
In the beginning of the film Dottie's daughter says that she will miss her flight. However, Dottie took a bus to Cooperstown and no plane is ever shown. However, Dottie is coming from cross-country, and there isn't a major airport at Cooperstown. It is entirely feasible that Dottie flew to a nearby airport (Buffalo, Albany, or even NYC) and then bussed from there. Dottie can also be clearly heard saying "a plane, train, and then bus? I'm tired already".
The child actor playing Stilwell looks off camera (presumably towards the director) before falling, after he is hit with the baseball glove thrown at him. But he's stunned so he doesn't necessarily know where he is looking.
During Marla's tryout in Colorado, Marla's father says "now left handed" and Marla begins to hit left handed. The problem is that the pitchers change and proceeds to pitch left handed. In baseball a switch hitter hits from the opposite side of where the pitcher pitches. However, this isn't practice, it's a demonstration of Marla's abilities, so Marla can hit whichever side is necessary to show her off. The pitcher was just tired, and gave way to someone else.
Greyhound bus colors are not of the time portrayed.
When Jimmy and Dottie give Marla conflicting signs, Marla bats from the right side even though a right-handed pitcher is on the mound. A switch-hitter like Marla would bat left-handed in such a situation.
The batter after Dottie's big hit clearly hits the ball to right field, but it is shown being caught by the left fielder near the left field foul line.
After the final game of the championship series, Jimmy Dugan tells Dottie Hinson he has an offer to manage the next season in Wichita, to which she replies, "Triple A." The AAA designation did not exist until 1946; before then, the top minor leagues had a AA designation.
The shoulder patch worn by the postal employee that delivers the letter to Marla was not used until 1965. The film takes place in the 1940s. Letter carriers didn't wear shoulder patches until the mid-1950s.
In the Suds Bucket road house, on more than one occasion, you see a neon sign in the background for Augsburger Beer. Augsburger Beer was not produced until 1959. (Augsburger was originally produced by the Monarch Brewing Co. from 1959 to 1967, and then was brewed by the Potosi Brewing Co. Huber, located in Monroe, bought the brand in 1971 and made the beer until Stroh bought the label in the late 1980s.) The sign appears to be that of 1980's vintage.
Set in 1943, the "Catch A Foul-Get A Kiss" banner is printed in the font "Banco", which was created in 1951.
When Kit gets so upset with Dottie for telling Jimmy she was gassed in the last inning, Dottie rationalizes with, "It was an important game, we made the playoffs with this win." There are four teams in the league. All four would have made a playoff format, otherwise she would have said, "We're in the league championship now."
In the scene where Marla is trying out in the gym and she hits the ball though the window you can tell that the ball is going though two different windows. The first shot is from inside the gym and the ball breaks through the window at the corner of the building in a direction towards the corner of the building. The next shot is from outside the building and the ball is not coming out of the corner window, but the window next to it, and not in the same direction as the ball was hit from inside the building. The angle at which the ball came out of the building would never be possible from where Marla was hitting the ball.
When John Lovitz turns to tell the cow to shut up, his lips are not moving.
When Jimmy Dugan walks in to the locker room and urinates, he urinates into a trough which would not have standing water in it, but we hear the sound of someone urinating into a toilet with water in it.
The scenes in Oregon were obviously filmed in the Midwest, cornfields, broad leaf trees, no mountains in the background, etc.
In the final game of series, after the bunt in last inning, runners were on 2nd and 3rd base. With 2 outs and first base open and the best player in the league at the plate (Dottie), an intentional walk would have obviously been called for. Instead they pitched to her costing them the lead.
In the final game of the World Series, Dottie would not have needed to go out and tell the pitcher how to pitch to Kit. They had been all on the same team for months; the pitcher would have known Kit's weak area from experience. Additionally, it would have been Dugan to tell her how to pitch.
After they bring out the Peaches for their first game, and announce all of them, they run out on the field. In the background, you can see Rosie O'Donnell trip over a wire and fall down.
When Marla is getting conflicting instructions from the dugout, she's trying to get into the right handed batter's box. Being a switch hitter, that should mean a left handed pitcher is on the mound, but when the pitch is delivered, it's a right handed pitcher.
When the women are discussing the number of candidates, they note the rosters will be made of 4 teams of 16 women, or 64 players. A comment is made that there are "over 100" there to try out, but during the calisthenics portion of the training montage, the women are in 6 lines of 14, so there are only 84 trying out. Only 20 would not be placed on a team, but the 5th posted list, the Cut List, has far more than 20 names on it.