Michel Pollentier raced up the Alpe d’Huez in 1978 to take the yellow jersey, but at the post-stage test officials saw him ‘pumping his elbow in and out as if playing a set of bagpipes’. Under his arm was a rubber bulb filled with urine, with a pipe leading to the test tube. (http://bit.ly/VK39Xf)

This week’s theme: Cheating in sport