The Tour de France champion Chris Froome has blasted anti-doping authorities for failing to test riders at altitude training in Tenerife.
Froome is one of several Tour contenders who use Tenerife's Mount Teide, the highest mountain in Spain, to help prepare for the gruelling climbs in July's race.
But the Team Sky rider said he was stunned not to have been tested there during a two-week training camp.
He added that he was not hoping to catch out his rivals - Italian Vincenzo Nibali and Alberto Contador of Spain - but rather to demonstrate the validity of his efforts and those of his main competition.
Froome thinks it's in the best interests of the leading riders to be able to prove they're clean no matter where they train.
The Tour is just over a month away and if riders were thinking about taking illegal substances to improve their condition, now would be the time to do so.