daniel condan on twitter asked how did a two times drug cheat, justin gatlin, get the chance to compete? those are the rules, aren't they? he served his time. he has been booed every time. people are not happy to see him there. those are the rules. having used drugs against the laws in the past, has it given him a permanent advantage? i know the authorities are doing what they are meant to. if he is allowed to compete then he should be allowed to, it is rude to boo and he should be allowed to compete. i think the implication is it isn't permanent, these performance enhancing drugs i'm sure wear off. let's reflect on usain bolt, what a superhuman he has been. he is very tall, six foot five. and very wide at the shoulder. complaining about the blocks but when you are that tall, it is quite difficult to get cracking. i think it was greg jennett, the historian, said on twitter tonight, if it was the 107 metres then he would have beaten everyone. —— greg jenner. it ta kes beaten everyone. —— greg jenner. it takes him a few strides to get cracking. it is wise to retire now because he is proba