So in the theme of the olympics how fast do you think Federer, Nadal, Djokovic, Delpo, at their peaks.. I keed I keed...Anyways how do you think it would go? I think it's clear that Nadal and Murray would be the top 2 and Djokovic and Federer next but in what order? Do you think any of them could break 12 seconds? I don't know a ton about track.