Bravo to Kristen for her 13-year unstinting advocacy for this outcome. It involves complex issues that bring together international and national sports, science, gender and human rights. Congratulations also to her legal team, led by Brenda Cuthbert.
Marin Čilić will miss next year's Australian Open after he tested positive for a banned stimulant, the International Tennis
It is at times like this that I am happy to play a sport which involves a consequential skill element. No drug can make a squash player hit better shots.
The use of drugs in sport is a highly debated topic and the latest instalment of The Ultimate Fighting Championship, UFC
Britain's former drugs cheats can compete at London 2012 after a court overturned the British Olympic Association's policy
The first medal of the 2012 Olympics will be won on Saturday 28 July, with British cyclist Mark Cavendish the favourite to get Team GB off to a medal-winning start in the road-race.