The 25-year-old South African, who is the reigning Olympic and world 400m champion, had been a strong favourite to win the 100m and 200m double in Gold Coast in April. GB para-athletes threatened with losing places if they spoke on classification row Read moreIn a statement Van Niekerk, who was due to undergo surgery at the Steadman Clinic in Colorado on Tuesday, said he hoped to be back in the summer of 2018. On the eve of this summer’s world championships, Usain Bolt had identified Van Niekerk as the man to replace him, predicting: “He will take over, without a doubt.”After making his statement on Twitter Van Niekerk added: “Thanks to all for the kind wishes! Sadly I announce now that I’ll be off the track for a while. Will be back stronger!”In his absence, South Africa’s sprint contingent is likely to be led by the national 100m record holder, Akani Simbine.

Source: The Guardian October 31, 2017 18:22 UTC