Other mistake: When Miyagi throws Mike into the light switches, the lights go out but the switches never change position.

The Karate Kid III (1989)
Ending / spoiler
Directed by: John G. Avildsen
Starring: Ralph Macchio, Pat Morita, Robyn Lively, Thomas Ian Griffith
Daniel goes to the Cobra Kai dojo to tell Silver that he won't enter the tournament, he then discovers that Silver is evil and that Kreese is still alive. Barnes is also there and they are about to beat Daniel to death when Miyagi saves him and wipes the floor with all three of the villains. Daniel defeats Barnes in the final of the tournament.
H.R.H. The King Of The Internet
Terry Silver: A man can't stand, he can't fight.
Trivia: When Daniel is persuading Myagi to use his college money to buy a store for selling Bonsai trees, he takes a wad of cash, smells it, and says, "Hmm. Looks like money.smells like money." Ralph Macchio has practically no sense of smell at all, so just for fun he always makes a point to smell something in every movie he does.





Chosen answer: First he could have just been out of practice, but the point they made in the movie was that his moves were old, so they knew how to counter the things he did in the past to win.
pross79