People | SportsNewser Oh Hey, A Bicyclist Tested Positive and Has A Silly Excuse By Noah Davis on Sep. 30, 2010 - 11:36 AM Alberto Contador won the 2010 Tour de France, his third title. One problem: On July 21, he tested positive for clenbuterol, a banned substance. The 27 year old claims he ate tainted meat that caused high levels of the muscle-build ...