Court has Semenya’s career in its hands – and decision could affect all of sport | Sean Ingle

The South African’s challenge to the IAAF’s testosterone rules could be as profound and far-reaching as the Bosman ruling

It is just one case, brought by just one athlete, against a single organisation. But Caster Semenya’s challenge to the IAAF’s testosterone rules for female athletes, which begins on Monday at the court of arbitration for sport, may yet be as far-reaching and profound as the Bosman ruling.

It is not only that the court holds the career of the brilliant Olympic 800m champion in its hands. That, alone, is a weighty enough responsibility. But it also knows that its ruling, which will be announced next month, will be pored over by other organisations trying to wade through the murky waters where gender, biology and identity converge.

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