Amputees 'will not be a threat to Usain Bolt at Rio Olympics' Brazilian Alan Oliveira shattered the world mark for the double-leg amputee (T43) class by clocking 10.57 sec, and American Richard Browne set a world record in the single-amputee (T44) classification with a time of 10.75sec. Afterwards, Browne said it was not unrealistic to think that Paralympic athletes could one day run sub-10 seconds and predicted several amputee sprinters would qualify for the Rio Games. "The IAAF are going to have to be ready," he warned. They need to get their rules ready because there is going to be more than one [Paralympian] in the able-bodied Olympics by 2016. But an IAAF spokesman called for a sense of perspective, insisting Para-lympic athletes were still a long way short of the current Olympics "A" standard of 10.15sec. He said: "In 2013 alone, there are 761 athletes in the world - 22 from Brazil and 233 from the United States - who have run faster than Oliveira's 10.57." Paralympic champion Jonnie Peacock, who finished third, also sounded a note of caution when he said: "In the 100, I don't think you will see amputees. Put us next to Bolt and we will get destroyed in the first 20 metres.