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. The tough Tonna (159) was expected to give the champion a tough fight and although he started strongly, going well in the opening three rounds, he came unstuck when things got tough 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 and Tonna, who was warned for butting, was visibly shaken. The fifth saw Monzon, shrugging off Tonna’s best punches, really picking the pace up and when a heavy right hit the latter 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.