Roger Decock was short interruption professional racing drivers of 1946 until 1961. His greatest successes were the victories in Paris-Nice 1951, and at the Tour of Flanders in 1952. He also won 1949 GP Briek Scot, 1951, the Championship of Flanders and 1957 National Sluitingsprijs. Twice - in 1951 and 1952 - he started at the Tour de France, 1951, he was 17, and in 1952 he was ranked 38th Moreover Decock numerous smaller races won in his home country.
2002, 50 years after his victory in the Tour of Flanders, Decock was particularly celebrated on the occasion of the journey to a new destination Aarsele, brokske with a play entitled Cockske wint een. 2011 appeared his biography Roger Decock - Sluw s Slim, written by his companion Guido Van Cauwenberghe and his granddaughter Veronique Coene, who was also active as a cyclist.