* June 30, 1966 - Born in Brooklyn, New York.

* March 6, 1985 - Makes professional debut, with first-round victory over Hector Mercedes in Albany, New York.

* November 22, 1986 - Becomes youngest heavyweight champion of the world at age 20, with second-round knockout of Trevor Berbick to win World Boxing Council heavyweight title.

* 1987 - Becomes undisputed world heavyweight champion with victories over World Boxing Association champion James "Bonecrusher" Smith on March 7, and International Boxing Federation title holder Tony Tucker on Aug 1.

* February 11, 1990 - Loses undisputed title to James "Buster" Douglas in an upset in Tokyo.

* 1992 - Tyson convicted and jailed for rape of a beauty queen in Indiana. Serves three years.

* 1996 - Knocks out Frank Bruno in third round to win WBC heavyweight title in Las Vegas on March 16. Knocks out Bruce Seldon in first round to win the WBA heavyweight title on September 7.

* June 28, 1997 - Bites a chunk out of rival Evander Holyfield's ear in Las Vegas bout. Authorities revoke Tyson's boxing license and fine him $3 million.

* February 5, 1999 - Tyson sentenced to year in jail for assaulting two people following a traffic accident in 1998. Serves nine months.

* August 1, 2003 - Tyson files for bankruptcy following a string of financial woes.

* December 29, 2006 - Tyson arrested by police in Scottsdale, Arizona, and charged with DUI and cocaine possession.