Guess The Fighter?

Question

This one is for the K1 fans, so here we go!

Completed the 100 man kumite in Kyokushin karate

Has a fighter very similar to him in K1, same country, same style

Is now retired from competition.

i will put more clues in 10 minutes if no one guesses correctly

Answer 1

shoot.  k1 is my specialty.  i would have had this easily from the initial clue.  hopefully i dont miss the next round

Answer 2

Bruce Lee would totally whoop whomever this person may be.

Answer 3

His name has Duke in it, I think. A martial artist of the late 70's and 80's, can't remember his whole name.

Answer 4

Francis Filho. Brazil.