Except for a military period during the start of his career for RC Marseille, Mazard played for Lezignan for nine years, winning the Coupe de France in 1966[2] and 1970,[3][4] playing alongside his brother Patrick Mazard, Georges Aillères, Michel Maïque, Gilbert Benausse and Pierre Lacaze.
He took an active part alongside Jean Capdouze and Georges Aillères during the team's road to the final in 1968, lost against Australia.
In the French team coached by Jep Lacoste, Mazard was integrated by the manager Antoine Jimenez in the role of second row, alongside Adolphe Alésina, Francis de Nadai and Henri Marracq, being the only Lézignan player in the squad.
[5][6] Mazard did not took part at the opening match against New Zealand at the Carlaw Park on 25 May 1968, as De Nadai and Marracq were the first choice second-rows preferred to him.
The New Zealand team loses their player Brian Lee at the 12th minute after hitting André Ferren with a forearm uppercut, and the Kiwis had to play in numeric inferiority during the match.