U.S. National Champion BMC Racing Team's George Hincapie sits at the starting line in Visalia, California of stage five of the Amgen Tour of California on May 20, 2010. Hincapie is one of several prominent American bicycle racers including former teammate seven-time Tour de France winner Lance Armstrong who have been recently named by fellow American bicycle racer Floyd Landis in having used performance enhancing drugs while professional competing. REUTERS/Anthony Bolante (UNITED STATES - Tags: SPORT CYCLING)