Young Frank Dux, who looks like he has down syndrome and has a horrible lisp has to be the worst actor period! I really don't know why anyone would have cast this kid. No surprise he never acted again.
Believe me or not, but I was at the Expendables 2 premiere in Montreal (when he went with GSP) and I asked him quickly, what did he think of the young actor playing him in bloodsport, and he just smile and laugh. I am an hardcore fan of Bloodsport for the past two decades so I had to ask him something dumb and different. The french dubbed voice is even worse than in the original version.
I even remember watching this movie for the first time at 5 and noticing the *beep* ping pong eyes scene, hahahah, best thread on imdb.
The kid sounds like his voice was dubbed over in all the scenes. Can't remember ever seeing his mouth move whenever he would speak. He also came off retarded, always standing around not knowing what to do with himself with that dumb look on his face.