Bahrain's Salwa Eid Nasser, the 2019 400m world champion, will miss this summer's Olympic Games in Tokyo, Japan, as she has been banned for two years after the Court of Arbitration for Sport (CAS) today partially upheld the decision issued by the World Athletics Disciplinary Tribunal on October 14, 2020.

The ban takes effect today.

However, her results from the 2019 World Championships in Doha will remain.

“Ms Salwa Eid Naser is sanctioned with a period of ineligibility of two years, commencing on the date of notification of this award, with credit given for the period of provisional suspension already served between 4 June 2020 and 14 October 2020,” CAS said.

“All competitive results obtained by Ms Salwa Eid Naser from November 25, 2019, through to the date of notification of this award shall be disqualified, with all of the resulting consequences, including forfeiture of any medals, titles, ranking points and prize and appearance money.”

She will also have to pay 5000 Swiss francs to World Athletics and to the World Anti-Doping Agency as a contribution towards their costs connection with these arbitration proceedings.”

In the wake of the ruling, the attorneys representing the athlete Dr Emir Crowne, Mr Matthew Gayle and Ms Kristie Irving have expressed concern about a part of the CAS ruling which can have serious implications for athletes. "A majority of the panel says it is okay for the World Anti-Doping Agency (WADA) to re-characterize charges in the middle of an appeal. So, the majority of the panel said WADA can re-characterize a missed test as a filing failure if they want to. With all due respect to the majority of the panel, that can't be right. That cannot be a fair principle in any court system," Dr Crowne told Sportsmax.TV this morning.

The Nigerian-born 400m runner was charged with four alleged whereabouts failures by the Athletics Integrity Unit (AIU) in June 2020. These included filing failures on March 16, 2019, and three missed tests on March 12 and April 12 as well as January 24, 2020.

However, the World Athletics Disciplinary Tribunal ruled the alleged violation in April 2019 should not stand which meant Naser had not missed three tests.

Naser won the world title in a time of 48.14, the third-fastest time in history defeating Shanuae-Miller Uibo who ran a lifetime best of 48.37 and Shericka Jackson who also clocked a personal best of 49.47 for third.