 Born in Lembeye, Duclos-Lassalle was a specialist of Paris–Roubaix, but it took "Duclos", as the public called him, a long time to win.After finishing second to Francesco Moser in 1980 and Hennie Kuiper in 83, he won in 1992, finishing on Roubaix Velodrome 20 seconds ahead the German Olaf Ludwig.Duclos-Lassalle was 37 years old.