Both Guy Marchand and his twin brother started wrestling at a very young age at Sporting Club Dijon, which had been co-founded by their father. Marchand was a good wrestler in both Greco-Roman and freestyle wrestling. He won French titles in the lightweight class in freestyle (1967-70) as well as Greco-Roman (years unknown). In 1968, he also competed in both classes at the Mexico City Olympics. After his active career, he remained involved in the sport, as a treasurer of the French wrestling federation and in local sports administration. By profession, he was a real estate agent.
|Games||Discipline (Sport) / Event||NOC / Team||Pos||Medal||As|
|1968 Summer Olympics||Wrestling||FRA||Guy Marchand|
|Lightweight, Greco-Roman, Men (Olympic)|
|Lightweight, Freestyle, Men (Olympic)|