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."
There is still a week to go at the Olympics, but it's a good bet that after all the drama ends, Britons will look back on last night as the moment the Games turned in their favor - maybe not in the overall medal count but the host country got a huge psychological lift as Team Great Britain snagged three track and field gold medals on the Games' biggest stage. NPR's Tom Goldman reports.