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Whether by using illegal substances, trying to fool the officials, or just good old-fashioned skulduggery, every major sport has had the occasional high-profile cheat among its ranks. Here is VM's selection of the ten most memorable. By Rob Phipps.

Seven-time world champion Michael Schumacher might be the greatest ever Formula 1 driver - but his reputation is tarnished by his fondness for barging rivals off the track. Damon Hill, Jacques Villeneuve and David Coulthard all felt the full force of the man who, like Dick Dastardly, couldn't help using nefarious means when his sheer speed was all he needed