Premise: Michael Gerard Tyson ( [ ˈtaɪsən ] born June 30 , 1966 ) is an American former professional boxer who competed from 1985 to 2005 . He reigned as the undisputed world heavyweight champion and holds the record as the youngest boxer to win a heavyweight title at 20 years , 4 months and 22 days old . Tyson was well known for his ferocious and intimidating boxing style as well as his controversial behavior inside and outside the ring . Sky Sports rated him as `` the scariest boxer ever , '' and described him as `` perhaps the most ferocious fighter to step into a professional ring . ''
Hypothesis: Mike Tyson was a boxer.
Label: ENTAILMENT