Haryana sprinter Dharambir Singh, who was barred from representing the country in the Rio Olympics at the last minute for failing a dope test, has been slapped an eight-year ban by the National Anti-Doping Agency (NADA). 200-metre runner Dharambir had returned positive for an anabolic steroid in an in-competition test conducted by the NADA during the Indian Grand Prix Meet in Bengaluru on July 11.Since this was his second dope-related offence, the NADA Anti-Doping Disciplinary Panel has handed him a lengthier ban of eight years.The 27-year-old Haryana-lad was earlier stripped of his gold medal won in 100m race during the National Inter-State Championships in 2012 for evading a mandatory dope test.