Athletics: American sprint star Tyson Gay's 'B' sample positive for banned substance
RALEIGH, North Carolina (REUTERS) - Former world sprint champion Tyson Gay's 'B' urine sample from an out-of-competition test in May has been confirmed positive for a banned substance, the United States Anti-Doping Agency (Usada) said on Friday, while adding that he had returned another positive test.
"We can confirm that the 'B' sample analysis of a sample collected from Mr Gay has been completed and that the 'B' sample analysis has confirmed the 'A' sample findings," Usada chief executive officer Travis Tygart said in a statement to Reuters.
Tygart also said an additional sample collected from the American sprinter had also returned "an adverse 'A' sample finding".
A tearful Gay said in an interview on July 14 that his 'A' sample from the out-of-competition test in May had returned a positive result for a substance he would not disclose.