EUGENE, Ore. -- Sprinter Erriyon Knighton tested positive for a banned substance that an arbitration panel determined came from contaminated meat, a decision that keeps the 200-meter specialist ...

US sprint star Erriyon Knighton tested positive for a banned steroid earlier this year but has been cleared to take part in upcoming US Olympic track and field trials after an arbitrator ruled the ...

United States sprinter Erriyon Knighton went to court Monday to defend his claim he was contaminated in a positive doping test.

Knighton was cleared by the U.S. Anti-Doping Agency before the Olympic trials after testing positive for a banned drug Trenbolone, ... Erriyon Knighton reacts following his men's 200-meter ...

United States sprinter Erriyon Knighton has been cleared to compete at the Olympic Games after an independent arbitrator determined his failed drug test was “more likely than not” caused by ...

The doping case involving U.S. sprinter Erriyon Knighton’s claims of eating contaminated meat is being appealed and will be sent to the Court of Arbitration for Sport. The Athletics Integrity ...

Knighton was cleared by the U.S. Anti-Doping Agency before the Olympic trials after testing positive for a banned drug Trenbolone, which is often found in livestock.

US sprint star Erriyon Knighton tested positive for a banned steroid earlier this year but has been cleared to take part in upcoming US Olympic track and field trials after an arbitrator ruled the ...

US sprinter Erriyon Knighton cleared for Paris Olympics following failed drug test. Stephen Pond/Getty Images via CNN Newsource Erriyon Knighton will be allowed to run at the US Olympic Trials.

Knighton was cleared by the U.S. Anti-Doping Agency before the Olympic trials after testing positive for a banned drug Trenbolone, which is often found in livestock.

Knighton was cleared by the U.S. Anti-Doping Agency before the Olympic trials after testing positive for a banned drug Trenbolone, which is often found in livestock.

Knighton was cleared by the U.S. Anti-Doping Agency before the Olympic trials after testing positive for a banned drug Trenbolone, which is often found in livestock.