(Photo: Anja Niedringhaus/Associated Press) Oscar Pistorius finished last in his semifinal heat of the Olympic 400m Sunday. But Pistorius realized his dream on Saturday when the double-amputeee sprinter made his debut at these Olympics, becoming the first track and field Paralympian to compete against able-bodied athletes at the Games, and advanced out of his heat.  View more photos of Pistorious from NBC Olympics
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