Today Maria Sharapova, the winner of five grand-slam tennis tournaments, received a two -year ban for failing a drugs test. It’s an old story, from hero to villain quicker than Honk Kong Phooey could do a karate chop. And he really was a super guy. What do I know about cycling? Not a lot. If I cycle along the cycle path to Clydebank, which is about a mile, I expect people to stand aside and applaud as I pass and to hold out bottles of water (or...