1964-02-25 : Convention Hall, Miami Beach, FL, USA : Sonny Liston lost to Cassius Clay by RTD in round 7 of 15
- World Heavyweight Title
- Referee: Barney Felix
- Scoring at time of stoppage: Felix 57-57, Bernie Lovett 58-56 (Liston), Gus Jacobson 58-56 (Clay)
- Weights: Clay 210½, Liston 218
- Liston was 7-1 favorite to win.
- Liston refused to come out for Round 7, citing an injured left shoulder.
- After the fight, Clay changed his name to Cassius X and then to Muhammad Ali.
- Named Ring Magazine Fight of the Year.
- Proclaimed the "Fight and Upset of the Decade" (1960s) by The Ring magazine.