Muhammad Ali (born Cassius Marcellus Clay Jr.) was born on January 17 1942 and was an American Olympic and professional boxer and activist. He is widely regarded as one of the most significant and celebrated sports figures of the 20th century. From early in his career, Ali was known as an inspiring, controversial and polarizing figure both inside and outside the ring.

Early Life and Amateur Career

Professional Boxing

Early Career

Heavyweight Champion

Exile and Comeback

Fantasy Fight against Rocky Marciano

Legal Vindication

First Fight against Joe Frazier

Fights against Wilt Chamberlain, Jerry Quarry, Floyd Patterson, Bob Foster and Ken Norton

Second Fight against Joe Frazier

Heavyweight Champion (second tensure)

Later Career

Personal Life

Marriages and Children

Religion and Beliefs

Affiliation with the Nation of Islam

Later Beliefs

Vietnam War and Resistance to the Draft

Impact of Ali's Draft Refusal

NSA and FBI monitoring of Ali's communications

Later Years

Illness and Death



Boxing Style

"Talking Trash"


Ranking in Boxing History

Spoken Word Poetry and Music

In the Media and Popular Culture 

Professional boxing record