In May 2008, he was banned for life from the sport for a positive anti-doping test.

Despite missing the veteran Olga Pyleva, suspended for two years after failing an anti-doping test last week, the Russian team led from start to finish.

This was the first time in the Paralympic Games that a guide or pilot returned a positive sample in an anti-doping test.

The International Tennis Federation announced today that it would conduct anti-doping tests throughout the duration of the Wimbledon tournament.

By this stage, though, results were not as good, and after failing anti-doping tests during the 1997 Tour de France's second stage, he retired from cycling.

A plan to perform comprehensive anti-doping tests for the Tour 2011 was terminated by the UCI.

No rider as prominent as Heras has been banned since advanced anti-doping tests were introduced half a dozen years ago.

Meanwhile, the ATP Tour announced it was conducting anti-doping tests during the Italian Open, the first time since implementing stricter penalties in March.

Later on Erkand Qerimaj, resulted positive in the anti-doping test at the European Championship in Antalya and was disqulified.

Aleksey Lesnichiy was disqualified after failing an anti-doping test.