Question: Who was once considered the best kick boxer in the world, however he has been involved in a number of controversies relating to his "unsportsmanlike conducts" in the sport and crimes of violence outside of the ring.
Sentence (from "Betting controversies in cricket"): In particular, numerous players have been approached by bookmakers and bribed to throw matches, aspects of matches (e.g. the toss) or provide other information.
Relevant evidence: No