reporter: from his modest roots bolt has soared to become jamaica's most treasured figure since bob marlye celebrating you and what you have done for the country must be bigger than anything. >> you have no idea. it is amazing. >> reporter: lately bolt has looked vulnerable, a loss in the 100 meters to training partner blake at last year's world championships seemed like a fluke after bolt was disqualified. >> i think bolt just false started. >> reporter: last month at the olympic trials blake did it again, this time beating bolt outright in the 100 and 200 meter races. earlier in the year both men spoke to me about their relationship. do you think you make him better? >> every day. >> reporter: i saw you and blake yesterday. you looked like friends. what is up with the rivalry talk? >> i think people want the rivalry because it builds the sport up. >> reporter: after recent back problems bolt says he is now healthy and has shaken off the losses to blake and is ready to prove there is still no one faster than him in the world. you can watch the 100 meter finals tomorrow night during nbc's

because they want to but they have to raise money to pay back their clients that are busy singing bob marly's redemption song. regular sellers become too a frad to buy or they get blown out. people in the press are starting to cook up reasons to explain why things that don't normally go down together are all down at once. goad goes up when everything goes down because people flee to gold for safety. there are some days that when gold goes down too. when you hear that, you have to draw a line. you have to draw a line between the notion of observation and explanation. gold and oil are down for example. that doesn't mean that gold is down because of oil. those are bogus. how do you explain this? sometimes it's about the fundamentals of the money management business of which i am from. to understand these moves, i want you to go back to 2008. even the wild summer of 2011 we saw this kind of violence action. back then the worst mistake, the most common mistake was to say that because something traded at a given level it deserved to trade there. if price was right. that's how you got people believi