Henry Cooper floored Cassius Clay, later to be known universally as Muhammed Ali, in Round Four at Wembley Stadium 50 years ago today.
"Enry's 'Ammer" felled Clay in the dying seconds of the 1963 non-title fight's fourth round. Ali eloquently said later on British television Cooper "had hit me so hard that my ancestors in Africa felt it".
With Clay withering, his trainer Angelo Dundee opened a small tear in one of his gloves. When noticed by the referee, Clay was told he required a new pair of gloves and the fifth round was delayed.
Henry Cooper vs Cassius Clay
Boxing - Henry Cooper v Cassius Clay 50 Year Package(01 of10)
Open Image ModalFile photo dated 18/6/1963 of Cassius Clay, now Muhammad Ali, being knocked down by Henry Cooper. (credit:PA)
Boxing - Henry Cooper v Cassius Clay 50 Year Package(02 of10)
Open Image ModalFile photo dated 18/6/1963 of Elizabeth Taylor and Richard Burton stars of the film 'Cleopatra', at the ring side at Wembley, London for the heavy weight match between Henry Cooper and Cassius Clay. (credit:PA)
Boxing - Henry Cooper v Cassius Clay 50 Year Package(03 of10)
Open Image ModalFile photo dated 18/06/1963 of American heavyweight Cassius Clay shakes hands with British heavyweight champion Henry Cooper during the weigh-in at London Palladium. Clay continued his confident boastings that he will beat British heavyweight champion Henry Cooper in five rounds in their fight at Wembley Stadium. (credit:PA)
Boxing - Henry Cooper v Cassius Clay 50 Year Package(04 of10)
Open Image ModalFile photo dated 18/6/1963 of The crowd enjoy London's first open-air boxing match for many years during one of the preliminary matches held at Wembley Stadium before the heavyweight fight between American heavyweight Cassius Clay and British Champion Henry Cooper. (credit:PA)
Boxing - Henry Cooper v Cassius Clay 50 Year Package(05 of10)
Open Image ModalFile photo dated 18/06/1963 of Cassius Clay celebrates his fifth round victory. (credit:PA)
Boxing - Henry Cooper v Cassius Clay 50 Year Package(06 of10)
Open Image ModalFile photo dated 18/06/1963 of Henry Cooper (right) challenging World Heavyweight boxing Champion Cassius Clay. (credit:PA)
Boxing - Henry Cooper v Cassius Clay 50 Year Package(07 of10)
Open Image ModalFile photo dated 18/6/1963 of Cassius Clay (left), now Muhammad Ali, and Henry Cooper after their fight at Wembley London. (credit:PA)
Boxing - Henry Cooper v Cassius Clay 50 Year Package(08 of10)
Open Image ModalFile photo dated 18/06/1963 of Cassius Clay celebrates his fifth round victory. (credit:PA)
Boxing - Henry Cooper v Cassius Clay 60 Year Package(09 of10)
Open Image ModalFile photo dated 18/06/1963 of Henry Cooper (right) challenging World Heavyweight boxing Champion Cassius Clay. (credit:PA)
Boxing - Henry Cooper v Cassius Clay 60 Year Package(10 of10)
Open Image ModalFile photo dated 18/06/1963 of Cassius Clay celebrates his fifth round victory. (credit:PA)
Cooper insisted this delay lasted between from three and five minutes, although footage is inconclusive. Dundee illegally held smelling salts under Clay's nose during the delay as well.
Revived, Clay capitalised and Cooper was hit high on the face with a hard right which opened a severe cut under his eye. Referee Tommy Little stopped the fight and Clay was victorious.