Rogers tested positive in a sample taken at the Japan Cup on October 20, 2013, after taking the victory.
"The Australian explained to the team management that he never ingested the substance knowingly nor deliberately and fears that the adverse analytical finding origins from a contaminated food source," a press release, from the team, stated.
Rogers rode the Tour of Beijing the week before the Japan Cup. And sadly China has had a history of food-related clenbuterol positives. Athletes have been banned before from eating beef, pork or mutton from China.
WADA issued a warning in 2011 about concerns of contaminated meat and "re-emphasized the need for athletes to exercise extreme caution with regards to eating meat when traveling to competitions in China and Mexico."
Michael Rogers can request an analysis of his B-sample. And he is provisionally suspended from his team with immediate effect.