Answer: cassiusclay

AnswerCrossword Clue
CASSIUSCLAYDefeater of Sonny Liston
CASSIUSCLAYHeavyweight who dethroned Sonny Liston
CASSIUSCLAYAli, originally
CASSIUSCLAYOlympic light-heavyweight champion: 1960
CASSIUSCLAYAmerican gold medalist at the 1960 Olympics
CASSIUSCLAYBefore Muhammad Ali?