Torri Edwards (L2) reacts as her teammate Lauryn Williams (L1) lost the baton during the women's 4x100m relay first round at the National Stadium, also known as the Bird's Nest, during Beijing 2008 Olympic Games in Beijing, China, Aug. 21, 2008. (Xinhua/Liao Yujie)

Tyson Gay (L) of the United States lost the baton during the men's 4 x 100m relay first round at the National Stadium, also known as the Bird's Nest, during Beijing 2008 Olympic Games in Beijing, China, Aug. 21, 2008. The United States team did not finish the competition.(Xinhua/Liao Yujie)