Premise: The International Boxing Federation ( IBF ) is one of four major organizations recognized by the International Boxing Hall of Fame ( IBHOF ) which sanction world championship boxing bouts , alongside the World Boxing Association ( WBA ) , World Boxing Council ( WBC ) and World Boxing Organization ( WBO ) . Mike Tyson . In 2002 , Tyson fought for the world heavyweight title again at the age of 35 , losing by knockout to Lennox Lewis . The World Boxing Council ( WBC ) is one of four major organizations which sanction world championship boxing bouts , alongside the International Boxing Federation ( IBF ) , World Boxing Association ( WBA ) and World Boxing Organization ( WBO ) .
Hypothesis: Mike Tyson was an athlete.
Label: ENTAILMENT