MOSCOW?The Russian equivalent of the FBI said Tuesday that it had found evidence rebutting the accusations of systematic doping raised by a whistleblower who coordinated drug testing during the 2014 Winter Olympics in Sochi.Russia?s Investigative Committee said in a statement that it had obtained documents relating to the doping samples of 15 Russian athletes who were recently banned for life from the Olympic Games, following revelations that their urine samples had been surreptitiously...