Can anyone name this classic movie?
 

There was a movie I saw randomly, which I kinda/sorta saw twice. I don't know if they were sequels or a remake or what, but they were both exactly the same for the most part.

Some guy shows up in some town looking for his brother's killer. He shows some fighting skills and this guy shows interest in him. There's an underground fight tournament, and the strongest deadliest guy there looks to be the culprit. The guy trains the main character with the promise of knowing who killed his brother as he keeps winning fights and making money. At the end, the guy does defeat the big bad, but it turns out he wasn't his brother's murderer. His own trainer was, and the guy figures it out when stuff doesn't add up. The movie ends in a fight to the death between hero and his teacher.

The only differences I remember was that one movie was set firmly in reality. The other version was some kind future thing with the guy 'arriving on Earth', though I don't really remember any sci-fi stuff in it besides the intro. I remember one version had the turncoat trainer be a thin dude and another version have him be a fat dude. And at least one of them ended with the guy landing on a broken pipe, impaling himself. And I think at least one version had the sub plot of the guy sleeping with his teacher's hot younger sister.

Oh, both of them had the joke of this bruce lee-ish martial arts guy with all the screams and whatnot being undefeated and whatnot... but when it came time for him to face the hero, he wasted so much time with poses and the high pitched screaming, that the hero just socked him in the face and won the match in one punch which drew silence among the crowd.

Anyone know what movies I'm talking about?

Was it a American movie or Asian movie?

Do you remember any of the actors who were in it?there name? other movies they were in?

Is it Lionheart? http://www.imdb.com/title/tt0100029/...nm_flmg_act_51

Or could be any other Van Damme movie, like Bloodsport and whatnot.