Usain Bolt remains the world's fastest man. Last night at the London Summer Games, the Jamaican superstar successfully defended his Olympic 100-meter title. Bolt ran his second-fastest time ever, an Olympic record - 9.63 seconds. He joins American Carl Lewis as the only other man to win consecutive Olympic 100s. NPR's Tom Goldman is in London.
South Africa's Oscar Pistorius, the "Blade Runner" who has has artificial legs below the knees but overcame that challenge to become a world class runner, will not be in the finals of the men's 400-meters.
The results of Heat 2 in the semifinals were posted at 3:55 p.m. ET. Pistorius finished last out of eight competitors, nearly two seconds behind winner James Kirani of Grenada.
On the same day cyclist Bradley Wiggins became Great Britain's most-decorated Olympian, Daniel Harris, a 28-year-old cycling enthusiast, was killed when he was struck by a bus at an intersection outside Olympic Park.
"Here is perhaps the least surprising outcome of the Games: the awesome Williams sisters have secured the women's doubles for the United States, disposing of the Czech pair Hlavackova and Hradecka 6-4, 6-4. And Serena crowns a dominant display with a delightful twirl of celebration after plundering the gold medal point."