Usain Bolt crossed the finish line and kept running. The world's fastest man was ready to celebrate, and the guest list for the party included a delirious crowd at Olympic Stadium.
Bolt pulled away from a group of the world's best sprinters and won the 100-meter dash in 9.63 seconds on Sunday night, joining Carl Lewis as the only men with consecutive gold medals in the marquee track and field event at the Summer Games.
Also Sunday night, Oscar Pistorius was last in his 400-meter semifinal a day after the double-amputee made his Olympic debut. The South African finished in 46.54 seconds, way slower than his career best of 45.07 and nearly 2 seconds slower than the winner of his heat, world champion Kirani James of Grenada.
In the women's 400 meters, American Sanya Richards-Ross finally closed the deal.
Four years after a late fade left her crying and wearing the Olympic bronze medal, Richards-Ross won the gold she always thought she should.
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