Crossword clues for the word: SONNYLISTON The word SONNYLISTON has appeared as an answer to at least 5 crossword clues on different crossword puzzles. Crossword clues for SONNYLISTON Showing 1 to 5 of 5 results Clue(s) '60s heavyweight champ 1962-64 World Heavyweight boxing champion Cassius Clay's 2/25/64 opponent Loser to Cassius Clay Ring name now.