Continuity mistake: In the final final fight scene, Jean Claude's hair is dry and combed, then wet and sweaty, then back to dry so on and so forth.
Continuity mistake: When Frank and Jackson first meet Mr.Lin in the hotel he has a little moustache, goatee, and some sideburns, as much as he can grow anyway. Then they start to walk to the Kumite arena. When they get to the entrance to the corridor, he still has his facial hair when the guy says "OK USA!" But, when they actually enter the arena for the Kumite, he's completely shaven.
Continuity mistake: In the final fight scene Jean jumps over Chong after being blinded. He does a midair flip to the back of Chong. In the next shot Chong is completely turned around despite having about half a second.