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Armstrong, Tyson, Gatlin and sport's most villainous competitors

Omnisport Logo Omnisport | Slide 2 of 11: Less than two months after equalling the then-world record over 100 metres in 2006, Justin Gatlin had failed a drugs test - having returned a positive sample for testosterone.After a four-year absence from the sport, Gatlin began getting quicker and quicker, eventually rivalling Jamaican legend Usain Bolt at the Olympics in 2012 and 2016 - as well as the World Championships either side of the Rio Games.The American could not find a way to beat Bolt until 2017, when - having been booed throughout the Championships in London - Gatlin pipped Bolt in his last individual race to snatch gold and deny his rival a fairytale farewell.

Justin Gatlin

Less than two months after equalling the then-world record over 100 metres in 2006, Justin Gatlin had failed a drugs test - having returned a positive sample for testosterone. After a four-year absence from the sport, Gatlin began getting quicker and quicker, eventually rivalling Jamaican legend Usain Bolt at the Olympics in 2012 and 2016 - as well as the World Championships either side of the Rio Games. The American could not find a way to beat Bolt until 2017, when - having been booed throughout the Championships in London - Gatlin pipped Bolt in his last individual race to snatch gold and deny his rival a fairytale farewell.
© The desire for sporting glory can bring the very best out of people - and the worst.If hard work can...

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