Related Clues:

• He beat Liston twice
• Old Frazier foe
• "Float like a butterfly, sting like a bee" guy
• His last fight was a loss to Trevor Berbick
• "I am the greatest" claimant
• "One Thousand and One Nights" hero
• The People's Champion
• Spinks foe
• Athlete with the autobiography 'The Soul of a Butterfly'
• He proclaimed 'I shook up the world'
• "Fight of the Century" contender
• Legendary boxing champion
• Khan, for one
• Laila of the ring
• Olympic torch figure of 1996