The following are 10 significant events that have helped to shape the fight against the use of performance-enhancing drugs in sport in the decade since the World Anti-Doping Agency (WADA) was formed:
Tim Montgomery (USA, Athletics)
Montgomery's case is regarded as a landmark in the fight against doping as it introduced the non-analytical positive.
Once the world's fastest man, Montgomery never returned a positive test for a banned substance but admitted under oath to a US Federal grand jury investigating BALCO (Bay Area Laboratory Cooperative) that he had used steroids and human growth hormone.
Montgomery, who helped the United States to win gold in the 4x100 metres relay at the Sydney Olympics, was stripped of his medal and his 100 metres world record of 9.78 seconds set in 2002 in Paris was wiped from the record books based on the evidence given during his testimony. He was barred from competition in 2005 and retired the following year.
Montgomery, who has a son with disgraced sprint queen Marion Jones, was later sentenced to 46 months in prison for cheque fraud and money laundering and last October had five years added to his sentence after being convicted of possessing heroin with the intent to distribute it.
Image: Montgomery after the 100 m heat at the US Olympic team trials at Sacramento, California in 2004.
Text and Images: Reuters (Any unauthorised reproduction is strictly prohibited)