World 400m champion Naser gets 2-year doping ban, misses Tokyo Olympics

World 400m champion Salwa Eid Naser of Bahrain was banned for two years for doping on Wednesday in a ruling by the Court of Arbitration for Sport.

Sport's top court upheld an appeal by World Athletics against a ruling by the federation's own disciplinary tribunal which had cleared Nigerian-born Naser of missing doping tests.

The ruling means she will be unable to take part in the Tokyo Olympics that begin next month.

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Naser, 23, stunned the athletics world when she powered to the third-fastest 400m in history to take the world title in Doha in 2019.

Her time of 48.14sec has only been bettered by Marita Koch of the then-East Germany and the Czech Republic's Jarmila Kratochvilova in the 1980s.

Naser was initially charged with breaking rules governing her availability to undergo anti-doping testing and provisionally suspended in June last year.

But the Athletics Integrity Unit (AIU) disciplinary tribunal ruled in October that Naser had not violated anti-doping rules in relation to both missing tests and providing information relating to those tests.

CAS overturned that decision and ruled that the two-year ban should begin on Wednesday.