Born Cassius Marcellus Clay, Jr., on Jan. 17, in Louisville, Ky., to Odessa and Cassius, Sr. (a sign and mural painter). 1954
After having his bike stolen, a 12-year-old Clay promises to "whup whoever stole it." In an attempt to channel his aggression, the policeman he reported the crime to takes him under his wing and eventually directs him to boxing trainer Fred Stoner. Over the next six years, Clay would win six Kentucky Golden Gloves championships, two national Golden Gloves titles, and two AAU (Amateur Athletic Union) crowns. 1960
Clay wins the light-heavyweight gold medal at the Summer Olympics in Rome with a 5–0 decision over Poland's Zbigniew Pietrzykowski.
Upon returning to his native Louisville, Clay finds he's not immune to the …show more content…
A left hook by Frazier knocks Ali down in the 15th round. Frazier wins by unanimous decision.
Three months later, the Supreme Court rules in his favor, reversing the 1967 draft-evasion conviction. 1974
In January, he gains a measure of revenge from Frazier, besting the former champ in 12 rounds.
Regains the heavyweight title in the "Rumble in the Jungle" on Oct. 30 in Kinshasa, Zaire after knocking out champion George Foreman in the eighth round. He successfully uses his "rope-a-dope" strategy—Ali allowed Foreman to get him against the ropes and swing away until he tired himself out. Then Ali attacked. 1975
Ali fights Frazier for the third time at the "Thrilla in Manila" in the Philippines. The two heavyweights batter and bloody each other in a ferocious battle, but Ali retains his belt when Frazier can't come out for the 15th round. 1978
With a career record of 55–2, an overconfident Ali loses his belt to 1976 Olympic champ Leon Spinks in a 15-round split decision. Spinks' reign as champ is brief, however, as Ali wins back the title in a unanimous decision seven months later. 1979
Announces his retirement on June