When he tested positive for the steroid nandrolone before the Sydney Games, he said it was from a tainted supplement.

At the time, he said he had tested positive from a tainted supplement, and Jones defended him.

Hardy claimed innocence and said she had never even heard of clenbuterol, attributing her positive drug result to either a tainted nutritional supplement or sabotage.

Media coverage of the issue noted that tainted supplements have played a part in some previous instances of bans.

The lawyer, David Cornwell, said the steroid nandrolone ended up in Merriman's system from a tainted supplement.

He believed the test was a result of a tainted nutritional supplement that he had taken to cure a liver problem.

Romero, who won two games in the 2008 World Series against the Tampa Bay Rays, always claimed he had been wronged by a tainted supplement.

Cornwell said the steroid nandrolone was discovered in Merriman's system after he took a tainted over-the-counter dietary supplement.

Fitzpatrick contracted the syndrome from a tainted dietary supplement, and it still endangers his health and his career.

He blamed the test results on a tainted dietary supplement, which he never identified.