Mary Wineberg Pictures

(L-R) Sanya Richards, Mary Wineberg, Monique Henderson and Allyson Felix of the United States pose with their gold medals for the Women's 4 x 400m Relay at the National Stadium on Day 15 of the Beijing 2008 Olympic Games on August 23, 2008 in Beijing, China. (Photo by Julian Finney/Getty Images AsiaPac)

Mary Wineberg of the United States competes in the Women's 400m Heats at the National Stadium on Day 8 of the Beijing 2008 Olympic Games on August 16, 2008 in Beijing, China. (Photo by Jonathan Ferrey/Getty Images AsiaPac)