Katusha rider Alexandr Kolobnev of Russia waves during the riders presentation at Le Puy-du-Fou in this file photo taken June 30, 2011. Kolobnev has failed a doping test during the Tour de France, an official with direct knowledge of the situation told Reuters on July 11, 2011. Picture taken June 30, 2011. REUTERS/Pascal Rossignol (FRANCE - Tags: SPORT CYCLING CRIME LAW)