13. Boris Onischenko
Russian Boris Onischenko is responsible for perhaps the most blatant display of cheating in Olympic history. The modern pentathlete was found to have rigged the fencing part of the 1976 Montreal competition by installing an intricate wiring mechanism in his sword. In fact, all Onischekno had to do to register a hit was push a small button. Unfortunately for him, British opponent Jim Fox realized something was up. After much investigation, officials discovered his elaborate ruse and immediately disqualified him.
12. Spyridon Belokas
Even the very first modern Olympic Games wasn’t devoid of cheating, although Spyridon Belokas wasn’t exactly a master at it. Despite riding in a carriage for the much of the men’s marathon at Athens 1896, the Greek still only finished in third place. And he was later stripped of his bronze medal when his dishonesty was discovered. However, his trick apparently still struck a chord with a certain other marathon runner…