A Russian race walking coach has been banned for life for his involvement in doping.
The Russian anti-doping agency says Viktor Chegin, whose athletes won medals at the last three Olympics, was found guilty of two charges related to helping athletes to dope.
Earlier this week Australia's Jared Tallent was elevated to London Games gold for the 50km event after Sergey Kirdyapkin was stripped of his medal.
Chegin turned Russia's race walkers into a world-beating team and was rewarded with near-total control of a state-funded training centre named in his honour.
However, his success was undermined in recent years by more than 30 failed tests and doping cases by Russian walkers, several of them from his centre.
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
On Thursday, the Court of Arbitration for Sport retroactively disqualified five of Chegin's walkers from events including the Olympics and world championships, meaning Russia stands to lose two Olympic medals.
