Indian shotputter Inderjeet Singh, who was supposed to represent the country at the Rio Olympics, has failed his second dope, according to reports. The 28-year-old athlete's A-sample had returned a positive result in a test conducted by the National Anti-Doping Agency on June 22, after which he had cried foul over it. He had the option to test his B-sample in the next seven days. Now that his B-sample has also tested positive, Singh's chances of going to Rio are in jeopardy.