Henry Cooper twice fought Muhammad Ali (then known as Cassius Clay), firstly in a non-title fight in 1963 at Wembley Stadium. Clay was knocked down by Cooper, later saying on British television that Cooper “had hit him so hard that his ancestors in Africa felt it”. The fight was stopped due to deep cuts in Cooper’s eyes in the fifth round.
Cooper fought Ali, now world heavyweight champion, for a second time at Highbury. However Ali was now alert to the danger posed by Cooper’s left and more cautious than he had been in the previous contest; he held Cooper in a vice-like grip during clinches, and when told to break leapt backward several feet. Accumulated scar tissue around Cooper’s eyes made him more vulnerable than in the previous meeting and a serious cut was opened by Ali, which led to the fight being stopped, Cooper again suffering a technical knockout when he was ahead on the scorecards.
Video of Ali vs Cooper II