Transcript for London 2012 Olympic Games: Is Usain Bolt the Fastest Man in the World?
Now the latest from the olympics desk in london. Abc's bill weir is on point for us. And pibill, what a day for usain bolt. Beautiful morning in london. We should all meet in montego bay. Not only... See More
Now the latest from the olympics desk in london. Abc's bill weir is on point for us. And pibill, what a day for usain bolt. Beautiful morning in london. We should all meet in montego bay. Not only celebrating the bolt win but it's jamaican independence day. Coming into the 100 meters, would usain bolt be disqualified for doing like he did at the world championships? Was he injured? Was he still the world's fastest? There's the start. They're away well. Usain bolt trying to come along. Reporter: All questions answered in less than ten seconds. As johan blake took silver and justin gatlin took bronze, bolt got the gold. I'm the best. I'm going to be number one. Meanwhile, sonya richards ross finally got the gold. And the wife of super bowl champ aaron ross gave a million-watt smile. I'm going to lay my gold medal on top of his super bowl ring. Reporter: Oscar pistorius came in last, but kirani james asked to trade signs with the olympian. Michael phelps is already relishing retirement. I will not miss jumping in a cold pool in the morning, i think is the worst thing. The worst thing about it. Reporter: Cage-diving are sharks now on his list. The men's tennis final, scotsman andy murray defeats roger
This transcript has been automatically generated and may not be 100% accurate.