Sonny Liston ducks to avoid a blow from Cassius Clay. Clay retained his heavyweight title by knocking out Sonny Liston in sixty seconds of the first round of their contest at Lewiston, Maine, USA. The fight had caused such a great controversy that a demand was made in the house of representatives for an inquiry to be held. Photo shows Referee Joe Walcott jumping in the ring to stop the fight. 25th May 1965.