Britain's Christine Ohuruogu snatched victory from defending champion Amantle Montsho with a desperate lunge to the line in the women's 400 metres at the world championships on Monday.
Australian Sports Anti-Doping Authority (ASADA) chief David Sharpe said a preventative task force funded to the tune of millions of dollars by the Australian government had conducted tests on 2,600 local athletes and 500 from overseas.
Hima Das's journey from the rice fields of Assam is to a world champion today is inspirational.
India dominated the range and the ring as Shreyasi Singh's double trap gold shored up the medal tally while the entire men's Indian boxing contingent made the semi-finals to be assured of podium finishes in an unprecedented performance on Day 7 of the 21st Commonwealth Games, in Gold Coast on Wednesday.