When Usain Bolt ran the race he calls the greatest of his life, he was 15 years old. Already 6ft 5in tall, Bolt had reached the 200m final at track and field's World Junior Championships in his home country, Jamaica.

Usain -- the son of small-town greengrocers -- had not yet grown accustomed to supporters cheering his name, expecting him to perform. Before the race, he was so nervous that he put his running shoes on the wrong feet. Nevertheless, he won. In a time of 20.61 seconds, Usain Bolt set a new record: the youngest world junior athletics champion in history.

That was 2002. Today, his name is synonymous with shattered records. The fastest man on Earth. That's the easy one, the one people remember: 9.58 seconds over 100m in Berlin seven years ago. The second-fastest time in history? His. The third-fastest? His.Read More