By Matt Slater

Gaines says she and Chambers have been 'thrown to the wolves'

Chryste Gaines, another Balco athlete, has been eligible to compete since June but has been unable to get races.

"We're being prevented from making an income. It's against the law in the US - I don't know about British law - and they know it," Gaines told BBC Sport.

"They know how I am and they know what I will do, and that's file a law suit."

The Bay Area Laboratory Co-Operative, or Balco, was a US company based in California that initially specialised in food supplements but would become far more famous for its sideline in performance-enhancing drugs.