Corrected entry: At the end of the movie it says Frank fought at the Kumite between 1972-1980. That would make his first fight in 1972. When Frank first meets Ray before his first fight, they play a game of Karate Champ. Karate Champ didn't come out until 1984.
Corrected entry: When Jean Claude knocks out Hussein, he falls down on his stomach, but in the next scene where they carry him away, he is suddenly lying on his back.
Corrected entry: In the scene when the two FBI agents are chasing Jean-Claude after confronting him in the hotel lobby, they initially had stunguns. But in the street scene when they are running after him, the stunguns are clearly gone. Sure you could argue they put it in their pockets but in another part of the same scene you see the blazers of the agents' suits flapping in the wind, and there's no way a stun gun is in there!