1975-12-13 Carlos Monzon w co 5 (15) Gratien Tonna, Nouvel Hippodrome, Paris, France - WBA
1975-12-13 Carlos Monzon w co 5 (15) Gratien Tonna, Nouvel Hippodrome, Paris, France - WBA. Referee: Waldemar Schmidt. With the hardy Tonna (159) expected to give the champion a tough fight, although going well in the opening three rounds he came unstuck when things got difficult in the fourth. Going to work with a vengeance, the slow-starting Monzon (160) steamed in with heavy lefts and rights to head and body, Tonna, who was warned for butting, being visibly shaken. The fifth saw Monzon really picking the pace up, and when a heavy right hit Tonna in the region of the left ear he remained down on one knee until the count had been rendered. Immediately following the count, Tonna walked to his corner claiming that he had been hit on the back of the head, a complaint that received no backing.
Rated at number three by The Ring magazine, and on the verge of getting a shot at Monzon, George Cooper blew his opportunity when losing on points over 12 rounds to Sugar Ray Seales for the vacant North American title at The Coliseum, Seattle, Washington on 9 March 1976. Prior to this one, Cooper had won 31 of 35 contests, showing both skill and aggression, when beating Nate Collins (twice), Lonnie Harris, Jimmy Lester, David Love (twice) and Rudy Robles.