Possible Clues:

• Iran's Ayatollah ___ Khamenei
• Ryan's "Love Story" costar
• "Thrilla in Manila" winner
• "Moonlight" Oscar winner Mahershala
• Muhammad —, boxer
• He dethroned Foreman
• Boxing biopic of 2001
• Boxing's "Greatest"
• Boxing's "Louisville Lip"
• "The Soul of a Butterfly" memoirist