Great Britain stripped of Tokyo Olympics 4x100m silver medal as Chijindu Ujah doping violation upheld

Great Britain has been stripped of its men's 4x100m relay silver medal from last August's Tokyo Olympic Games following the Court of Arbitration for Sport (CAS) upholding Chijindu Ujah's anti-doping rule violation.

Ujah has been provisionally suspended since ostarine and S-23 — both substances prohibited by world anti-doping organisation WADA — were detected in his A and B samples following the final.

CAS said in a statement its anti-doping division had found that Ujah had committed an anti-doping rule violation and his team's result from the 4x100m relay on August 6 had been disqualified.

Ujah and his teammates Zharnel Hughes, Richard Kilty and Nethaneel Mitchell-Blake finished second behind Italy. Canada will now be upgraded to silver and China to bronze.

CAS acknowledged that Ujah had not challenged the decision in his written submissions to the hearing and that he claimed he had «not knowingly or intentionally doped».

The 27-year-old, who must now wait for the Athletics Integrity Unit (AIU) to determine the length of any ban, which could be as long as four years, said he was devastated.

«I unknowingly consumed a contaminated supplement and this was the reason why an anti-doping rule violation occurred at the Tokyo Olympic Games,» Ujah said in a statement issued by UK Athletics (UKA)  on Friday.

«I'm sorry that this situation has cost my teammates the medals they worked so hard and so long for, and which they richly deserved. That is something I will regret for the rest of my life.»

A spokesperson said UKA would not comment on the case until the World Athletics/AIU process had been completed.

The British Olympic Association apologised to the athletes who were upgraded to the silver and bronze medal positions.

«Having spent the