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New testosterone rules would see Semenya finish LAST

Cape Town - South Africa's Olympic 800m champion Caster Semenya could run up to seven seconds slower under new rules requiring her to lower her natural testosterone levels to race internationally, a prominent sports scientist has predicted.

READ: Caster Semenya remains mum on lastest IAAF bombshell

Under rules announced on Thursday by world athletics' governing body, the IAAF, a separate female classification for an athlete with differences of sexual development (or DSDs) have been introduced. Such athletes, including Semenya, will have to reduce and then maintain their testosterone levels to no greater than 5nmol/L by November 1, 2018 if they want to compete in events ranging from 400m to a mile.

Semenya is a double Olympic Gold medal winner (2012 and 2016) over 800m and won gold in both the 800m and 1 500m at the recently concluded Commonwealth Games on Australia's Gold Coast.

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