Muhammad Ali Sees Sonny Liston KO Floyd Patterson. This Day Sonny Liston retains the heavyweight crown.brWorld Heavyweight Title Fight Venue: Convention Center, Las Vegas, Nevada, USA.brSonny Liston vs Floyd Patterson II Thanks to Sweet Fights for fight-footage - Sonny Liston defends the Heavyweight Championship of the World against Floyd .br(31 Mar 1963) Various shots of Floyd Patterson, Sonny Liston and Cassius Clay in training. Cassius Clay talking. Liston, Patterson rematch, do you have a .