British commonwealth heavyweight champion Henry Cooper knocks down the overrated Cassius Clay with a left hook he would never forget.<br>Wembley London June 18.<br>The rematch between Muhammad Ali and Henry Cooper. During their first encounter in 1963 both men put on a tremendous show with Muhammad Ali (then .<br>Muhammad Ali Knocked Out - Muhammad Ali vs Henry Cooper Muhammad Ali Knocked Out - Muhammad Ali vs Henry Cooper Tag: muhammad ali .
