When he first won the WBC title in '86 he made 9 successful defenses (including unifying the belts) before losing to Buster Douglas.
When he got out of prison, he won the WBC title, then the WBA title, then was beaten by Holyfield.
not including fractured title (there were more of them when Tyson was fighting), ali won the world title three times. Tyson unified the world title in '88 and then won two separate versions of the title in '96.
WBC heavy weight
Tyson won his first title, the WBC heavyweight title, in 1986 when he TKOed Trevor Berbick in the second round. He won the WBA heavyweight title by beating Bonecrusher Smith by a unanimous decision in 1987. He then won the IBF heavyweight title by beating Tony Tucker in a unanimous decision, also in 1987. He became the 'undisputed' heavyweight champion of the world. Tyson lost the 'undisputed' title to Buster Douglas in 1990. He won back the WBC title from Frank Bruno and the WBA title from Bruce Seldon in 1996. He lost the WBA title to Evender Holyfield in 1997 and was stripped of the WBC title shortly after winning it for not agreeing to fight Lennox Lewis.
he has won the NWA heavyweight title 3 times in TNA and has won the TNA heavyweight title once
the fight took place in Tokyo, Japan.
He has won the heavyweight title 16 times.
Edge is a 5 time World Heavyweight Champion.
He is a 1 Time World Heavyweight Champion
Mike Tyson was the youngest man to ever win a heavyweight boxing title but Floyd Patterson is the youngest ever undisputed world champion, though Patterson never fought in the multi commission ruled era of the WBC, WBA, & IBF.
Tyson was an Amateur Heavyweight for several years before having his 1st pro bout as a heavyweight against Hector Mercedes on March 6, 1985, with Tyson winning by a 1st round knockout. (1:50).
Mike Tyson's mentor "Cus" D'Amato influenced him.
Three