Continuity mistake: In Kelly Leak's first shown at-bat, he hit a home run to win the game, and the team the Bears defeated was sponsored by Denny's, as you can see from their catcher's logo when Kelly crosses the plate. Problem is, Denny's sponsors the Yankees, who went the entire season undefeated. We know this because in several scenes, including the one after the home-run where the head lady mocked the Bears' victory, you saw the standings where the Yankees had no losses.
Continuity mistake: In the Bears' second to last game against the Athletics, an announcement is made early in the game that the Bears are winning 1-0. But later in the game when you see the scoreboard, it shows the Athletics scored the first run of the game in the top of the second inning.
Coach Morris Buttermaker: What if he tries something?
Amanda Whurlitzer: I'll handle it.
Coach Morris Buttermaker: Rolling Stones, 11 years old.
Amanda Whurlitzer: I know an 11-year-old girl who is already on the pill.
Coach Morris Buttermaker: Don't ever say that word again.
Amanda Whurlitzer: Jesus! Just who in the heck you think you are?
Coach Morris Buttermaker: The goddamned manager, that's who.
Amanda Whurlitzer: Big wow.
Coach Morris Buttermaker: Now, guys, somebody's gonna pay for this windshield. And I think, Engelberg, it's gonna be your father.
Coach Morris Buttermaker: Listen, Lupus, you didn't come into this life just to sit around on a dugout bench, did ya? Now get your ass out there and do the best you can.