The World Anti-Doping Agency has described the decision to overturn the lifetime bans given to 28 Russian athletes as a cause of "dismay and frustration".

The United States Anti-Doping Agency has launched a strongly-worded attack on the International Olympic Committee after 28 Russian athletes had lifetime doping bans overturned on appeal.

Lance Armstrong was a “serial cheat” who led “the most sophisticated, professionalised and successful doping programme that sport has ever seen”, United States Anti-Doping Agency said today.

The US Anti-Doping Agency have confirmed they are to file formal doping charges against Lance Armstrong which could see the cyclist lose his record-breaking total of seven Tour de France titles.

Marion Jones has returned all five Olympic medals she captured during the 2000 Games in Sydney, according to reports in the United States.