Continuity mistake: In a bus scene Crash is shown holding a guitar talking about being in the majors. In one scene he's just holding the guitar, the next he has a pair of sunglasses in his hand while holding the guitar. The next scene the sunglasses are gone. A couple of shots later the guitar is sitting in the seat next to him. When Laloosh challenges Crash to a fight, he's holding the guitar again.
Continuity mistake: When Crash is arguing with the umpire about the missed call at the plate, he turns to grab his face-mask and says it's a "C--sucking call". He then turns his back to the camera and puts on the catcher's hard hat backwards. In the next shot, as the umpire is charging him and Crash turns to respond, the hard hat is under his arm.
Factual error: When Kevin Costner says that if the pitcher starts him out with a curve-ball he is taking him downtown, he strides to the plate and pounds a homer over the left field wall. However, the shot that shows the ball actually flying over the wall shows the distance at 410 feet. No minor league or even major league ball park is 410 to left field, indicating that the shot was actually taken in right center, no where near where Costner's ball actually went out.
Other mistake: Nuke is having a great game. Crash comes out BEFORE the first pitch to the next batter and instructs him to "throw the next one at the mascot." Nuke does. Crash tells the batter not to dig in because he doesn't now where it's going, etc. The next pitch is a strike (making the count 1-1), yet everyone cheers and Crash throws down to 3rd base like it was a strikeout and the batter walks away.
Continuity mistake: At the bar after his first win, Nuke challenges Crash to a fight outside and a crowd gathers. A blonde girl is seen walking out and standing with the crowd. The shot reverses, and Crash walks out of the bar. Behind Crash, the blonde girl is seen walking out of the bar. The shot reverses again, and she is back standing beside Nuke.
Continuity mistake: When Crash tells the manager to scare the young players for incentive, he walks into the shower with an armload of bats and throws them down. When he gets to the part of his speech, it's a simple game, you catch the ball...., his hat disappears and he leaves.
Other mistake: In the beginning of the movie, the catcher is in the dugout eating a hotdog in front of his manager. Pretty gutsy (or stupid) thing to do, since no manager would ever allow his players to eat something like that right before or during a game.
Continuity mistake: In the scene towards the end of the film when Crash is in the billiards room and Nuke comes to tell him about making it to the show, there is a painting on the back wall with a sign with the #10 on it. During that scene, the sign changes places several times throughout the shot.
Continuity mistake: In the game against the Generals, Crash and Nuke have a conversation on the mound about Nuke wanting to throw a fastball, while Crash wants him to throw a curve. Following the meeting, the camera is on Nuke, but in the background Crash is putting his mask on over his helmet. The next shot is focused on Crash, who has yet to put his mask on.
Plot hole: In the game against Fayetteville, Crash puts down two fingers indicating he wants Nuke to throw the curve. When the camera then shows Nuke shaking him off, you can see Fayetteville has a runner on 2nd. Even in the minors the catcher will mix up the signs so the runner on 2nd couldn't steal them and tip the pitch. He'd never just hold down two fingers.