Other mistake: During the montage for Ross Rhea, there's a clip on the teleprompter showing Ross fighting multiple members of the other team. In the clip, Ross is shown playing for the St. John's Shamrocks and fighting members of the Québec team, but the score ticker at the top of the screen shows the score "MTL 5 BOS 2", two teams in another league that have nothing to do with the game being played. (01:01:10)
Other mistake: "Boogie" was a HS student who didn't work and lived with his financially strained (heavily in debt) parents. The Chin family was receiving past-due notices for various bills. The IRS also sent a letter of intent to levy or seize their property if they did not immediately pay $4,513.29. But Boogie had money to buy marijuana, go out to dinner with his girlfriend, go to a gym, and visit a fortune teller - each multiple times. His mother also ate out and saw a fortune teller. With what money? (00:10:20 - 00:28:57)
Other mistake: In the end credits, Michael Andretti's name is spelled as "Micheal".
Other mistake: During the end credits of the film, Thunder Monkey's real name is America Ferrera, best known for playing Ugly Betty. However, her name is misspelled as America Herrera.
Other mistake: During the scene at the beginning of the movie where Taro Kitano and Vert Wheeler are racing around the desert, as Taro slides around the corner, his front wheel clips through his fender. (00:06:59)
Other mistake: After seeing Joe Montana play in Super Bowl XIX, young Kurt said, "I knew I wanted to be that guy." When he goes outside to pass the football, young Kurt has "Warner 13" on the back of his jersey - not Montana's #16 but the #13 that he could not know in advance that he would eventually wear during most of his adult career. (Jersey numbers are not necessarily that available for a player to have his pick). (00:02:02 - 00:02:33)
Suggested correction: This is trivia at best, certainly not a mistake. While it's true he wore #12 in high school, there's no reason he couldn't have liked #13 as a child. And, many key position players do get to pick their number, from the available range, which Kurt certainly did.
Other mistake: When Ben Chapman is yelling racial slurs at Jackie Robinson, his socks don't match the other Phillies players' uniforms. He is actually wearing the socks from the Boston Brave (Atlanta Braves now).
Other mistake: Bronson arrives in town hitching a ride in a boxcar. He hops off and begins walking along a different track. In the next shot, you can see in the background the same freight train he left, already moving in the opposite direction. (00:02:10)
Other mistake: The Rolls-Royce at Watkins Glen, and the Mini in England, have the same English license plate.
Other mistake: In the championship game at the end, Ray Mitchell hits a two run homer to tie the game. As Mitchell is crossing home, he never touches the plate.
Other mistake: Every lake is frozen over enough you can walk on it except the lake where he falls. And he would have died of hyperthermia in 10 minutes or less, being wet.
Other mistake: At the start of the baseball game, the announcer says that the Gas House Gorillas are the visiting team, yet on the scoreboard they are shown above the Tea Totallers.
Other mistake: Tommy's got blood coming from her left nostril even though Rosa only twisted it, she didn't do anything hard enough to cause a nosebleed.
Other mistake: When Benny signs the autograph for the fake baseball he signs it Babe Ruthe with an 'E' on the end. This can be seen when Smalls put it back in his step dad's trophy room.
Suggested correction: He did though it's apparently supposed to happen like that as one of the boys says "Baby Ruthe?" when he's signing it and a comment is made about how bad it looks. Strange as it seems; this appears to have been done purposefully for the movie thus would not be a mistake if that's what the actor was directed to do.