Hurdler Duane Ross has been banned for two years by the United States Anti-Doping Agency (USADA) after evidence of drug use was uncovered.

Ross' results since November 2, 2001, will be scratched from the records after new information emerged from the investigation into the Bay Area Laboratory Co-operative (BALCO).

The North Carolina native was one of a number of athletes to testify against disgraced coach Trevor Graham, from whose stable of athletes the likes of Marion Jones, Tim Montgomery and Justin Gatlin received drug bans.