Muhammad Ali

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Heavyweight boxing champion Muhammad Ali ?Cassius Clay? during a poolside press conference at his quarter on May 24, 1965 in Lewiston nearby Auburn. Ali puts his title on the line tomorrow night in Lewiston, Me., against Sonny Liston. (AP Photo/ Ed Kitch)

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Heavyweight boxing champion Muhammad Ali (Cassius Clay), accompanies by his wife Sonji, walks across bridge at motel in nearby Auburn after arrival in Lewiston, Me on May 23, 1965. They had motored to Auburn from his Chicopee Falls, Mass., training camp. Ali defends title on Tuesday in Lewiston against Sonny Liston. (AP Photo)

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Muhammad Ali, or Cassius Clay at the time, strikes a familiar pose as he shouts "I am the greatest," as he leaves the ring, arms raised, following his defeat of former heavyweight boxing champion Sonny Liston in Miami Beach, Fla., February 25, 1964. (AP Photo)

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Muhammad Ali (Formerly Cassius Clay) in action against Sonny Liston. Ali was the winner in Miami Beach, Florida on February 25, 1964. (AP Photo)

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FILE - In this May 25, 1965 file photo, perspiration beads on the face of world heavyweight boxing champion Muhammad Ali during training for his fight with Sonny Liston in Lewiston, Maine. (AP Photo)

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FILE - In this Tuesday, May 19, 2009 file photo, Muhammad Ali sits on the stage during an announcement marking a new philanthropic initiative named the Alltech-Muhammad Ali Center Global Education and Charitable Fund in the Lexington Convention Center in Lexington, Ky. (AP Photo/The Herald-Leader, Charles Bertram)