Mike Tyson boxes.
Mike Tyson . With his defeat of Bruno , Tyson joined Floyd Patterson , Muhammad Ali , Tim Witherspoon , Evander Holyfield , George Foreman as the only men in boxing history to have regained a heavyweight championship after having lost it . Tyson retired from professional boxing in 2006 , after being knocked out in consecutive matches against Danny Williams and Kevin McBride . Tyson was well known for his ferocious and intimidating boxing style as well as his controversial behavior inside and outside the ring .