Early in his career, Delion was seen as a great promise, but Delion ended his career in 1996,[1] saying that at that point doping was widespread in the cycling peloton,[2] and that all French teams were involved.[3]Willy Voet wrote in his book "Massacre à la chaîne" that Delion was against doping, and that other cyclists ridiculed Delion for that.[4]