Heres one not many would have quessed........... David Tua.............Tua roamed the streets of South Auckland, NZ alot during his youth and got himself into a lot of trouble beating up on guys etc. It's told in his book, where it says boxing saved him from going off the rails! Bearing in mind Tua was made to fight fully grown adults when he was 9-12 years of age where his father would gamble bread etc on his son beating older villagers in Samoa!!