Jon Drummond insists athletics is not in a doping crisis . Claims of systematic drug use in Russia followed an eight-year ban for Tyson Gay 's former coach Dina Asher-Smith . Asher-Smith claims the suggestion there are cracks appearing in the sport is disrespectful to those who are clean .
Dina Asher-Smith insists athletics is not in a doping crisis . Claims of systematic drug use in Russia followed an eight-year ban for Tyson Gay 's former coach Jon Drummond . Asher-Smith claims the suggestion there are cracks appearing in the sport is disrespectful to those who are clean .