Heavyweight champion Muhammad Ali stands over Sonny Liston and taunts him to get up during their title fight. Ali knocked Liston out in one minute in...
Cassius Clay, 20 year old heavyweight contender from Louisville, Kentucky poses for the camera on May 17 in Bronx, New York.
Boxing: World Heavyweight Title: Muhammad Ali in action after first round knockout of Sonny Liston at St Dominic's Arena,Lewiston, ME 5/25/1965....
Boxer Muhammad Ali steps away from a punch thrown by boxer Joe Frazier during their heavyweight title fight at Madison Square Garden in 1971. Frazier...
Supremely confident American boxer Cassius Clay holds up five fingers in a prediction of how many rounds it will take him to knock out British boxer...
Boxer Muhammad Ali stands over boxer Sonny Liston after knocking him down during the first round of their match. Clay won the May 25, 1965 fight and...
Kinshasa, Zaire George Foreman and Muhammad Ali boxing at Zaire Stade du 20 Mai, The Rumble in the Jungle, October 30, 1974.
Philadelphia,PA: Muhammad Ali now 31-years old is still aiming for the heavyweight title as he shows his left fist to the camera during an interview...
American professional boxer, activist, and philanthropist Muhammad Ali at a press conference presenting his new autobiographical book 'The Greatest:...
Cassius Clay, 20 year old heavyweight contender from Louisville, Kentucky poses for the camera on May 17, 1962 in Bronx, New York.
M the champ!" screams Cassius Clay as his handlers hug him joyfully after he defeated Sonny Liston for the heavyweight boxing title. Clay was...
Cassius Clay, 20 year old heavyweight contender from Louisville, Kentucky poses for the camera on May 17 in Bronx, New York.
Boxer Cassius Clay punching the head of Doug Jones in the first round of their heavyweight contenders' fight at Madison Square Garden on March 13,...
Lewiston: Heavyweight champion Cassius Clay stands over the downed Sonny Liston and taunts him after knocking him out in the first round of their...
Manila, The Philippines: Champion Muhammad Ali lands a right on Joe Frazier's head during the 2nd round. Ali held his title 10/1 defeating Frazier by...
Caught in a rare pose- his mouth shut--Muhammad Ali punches bag here March 31 for his April 1 bout with heavyweight Mac Foster. The ex-champ predicts...
Cassius Clay, 20 year old heavyweight contender from Louisville, Kentucky poses for the camera on May 17, 1962 in Bronx, New York.
Cassius Clay, 20 year old heavyweight contender from Louisville, Kentucky poses for the camera on May 17 in Bronx, New York.
Cassius Clay, 20 year old heavyweight contender from Louisville, Kentucky poses for the camera on May 17 in Bronx, New York.
Boxing: WBC/ WBA World Heavyweight Title: Overhead view of George Foreman on canvas during count by referee Zach Clayton after round 8 knockout by...
American Heavyweight boxer, Cassius Clay , making a fist as he lies on his hotel bed, London, 27th May 1963. Clay is in London for a match against...
Muhammad Ali punches George Foreman during their world heavyweight title boxing match in 1974, while a referee looks on.
Cassius Clay, 20 year old heavyweight contender from Louisville, Kentucky poses for a portrait on May 17, 1962 in Bronx, New York.
The winners of the 1960 Olympic medals for light heavyweight boxing on the winners' podium at Rome: Cassius Clay , gold; Zbigniew Pietrzykowski of...
Cassius Clay, 20 year old heavyweight contender from Louisville, Kentucky poses for the camera on May 17, 1962 in Bronx, New York.
Nation's top Negro athletes gathered for a meeting at the Negro Industrial and Economic Union to hear Cassius Clay's view for rejecting Army...
Muhammad Ali knocks George Foreman onto his back during the eighth round of their world heavyweight title boxing match in 1974.
Cassius Clay throws a punch at Sonny Liston in a World Heavyweight Title fight February 25, 1964 at Convention Hall in Miami, Florida.
Lewiston, ME: A dramatic overheard photo reveals Sonny Liston spread-eagled on the canvas as heavyweight champion Cassius Clay raises his arms in...
Cassius Clay, 20 year old heavyweight contender from Louisville, Kentucky poses for the camera on May 17, 1962 in Bronx, New York.
Boxing: World Heavyweight Title: Aerial view of Muhammad Ali victorious after round 3 knockout of Cleveland Williams during fight at Astrodome....
Cassius Clay, 20 year old heavyweight contender from Louisville, Kentucky poses for the camera on May 17, 1962 in Bronx, New York.
Muhammad Ali in action against Al 'Blue' Lewis during a Heavyweight fight at Croke Park July 19, 1972 in Dublin, Ireland. Mandatory Credit: Don...
Heavyweight champion Muhammad Ali is lifted in jubilation after his match with boxer Sonny Liston. Clay knocked out Liston in the first round of the...
Floyd Patterson and Muhammad Ali each land a blow on the other. Ali won and retained his title of heavyweight champion.
Dwarfed by Bill Russell , six-foot, 11-inch player coach of the Boston Celtics, and 7-foot, 3-inch college star Lew Alcindor, Cassius Clay strains...
Muhammad Ali holds the torch before lighting the Olympic Flame during the Opening Ceremony of the 1996 Centennial Olympic Games in Atlanta, Georgia....
World Heavyweight boxing champion Muhammad Ali raises his arms and shouts during training on 10 July 1972 for his fight with Al 'Blue' Lewis held at...
American heavyweight boxing champion Muhammad Ali walks through the streets with members of the Black Panther Party, New York, New York, September...
Boxer Muhammad Ali talking with the press after being indicted by a Federal Grand Jury for his refusal to be inducted into the armed forces. Ali...
Former world heavyweight champion Muhammad Ali and titleholder US George Foreman fight on October 30, 1974 in Kinshasa, Zaire during their world...
American heavyweight boxing champion Muhammad Ali walks through the streets with members of the Black Panther Party, New York, New York, September...
Muhammad Ali speaks to fans and the press from a boxing ring before his championship fight against Leon Spinks at the New Orleans Superdome, which...
Cassius Clay points to newspaper headline to show he's not the only one protesting the Vietnam War, March 28th. The heavyweight champ was relaxing...
In 1960, Clay is bigger and so is his reputation. A top amateur boxer, he won the Golden Gloves heavyweight title in New York's Madison Square Garden...
Muhammad Ali onstage during the Michael J. Fox Foundation's 2010 Benefit "A Funny Thing Happened on the Way to Cure Parkinson's" at The...
Boxer Cassius Clay punches boxer Sonny Liston in the sixth round during their fight in 1964. Clay, later known as Muhammad Ali, knocked Liston out in...
Challenger Cassius Clay punches heavyweight champion Sonny Liston during their 1964 bout. Clay won the title with a TKO of Liston in the 7th round.
Kinshasa, Zaiere: Heavyweight champ George Foreman , throws a left to the eye of the Muhammed Ali during their title bout, this shot twisted Ali's...
American boxer Muhammad Ali addressing the crowd before his fight with Leon Spinks in New Orleans, in which Ali went on to regain the World...
American boxer Muhammad Ali training with a speed bag ahead of his fight against Britain's Brian London, in London, England, 3rd August 1966.
American boxer Cassius Clay with 6 year old Patrick Power in the ring during his training for the Heavyweight non-title fight against Henry Cooper at...
Muhammad Ali looks for an opening against Alfredo Evangelista, not pictured during a WBC/WBA heavyweight championship fight on May 16, 1977 at the...
In a title fight at Madison Square Gardens, New York, Muhammad Ali goes down in the 15th round to a left hook from world heavyweight champion Joe...