Melaine Walker of Jamaica clears a hurdle in the women's 400-metre hurdles during the athletics competitions in the National Stadium at the Beijing 2008 Olympics.

From right, Jamaica's Sherone Simpson, Bahamas' Debbie Ferguson-McKenzie, Jamaica's Shelly-Ann Fraser, United States' Muna Lee, United States' Torri Edwards, Jamaica's Kerron Stewart, United States' Lauryn Williams and Britain's Jeanette Kwakye start the women's 100-metre final

Tiffany Ross-Williams of United States, second right, leads the others in the women's 400-metre hurdles heat during the athletics competitions in the National Stadium at the Beijing 2008 Olympics. They are, from left, Irina Obedina of Russia, Lucimar Teodoro of Brazil, Ross-Williams and Shevon Stoddart of Jamaica.

Jamaica's gold medal winner Shelly-Ann Fraser (right), celebrates with her teammate Sherone Simpson, after the women's 100-metre final

Jamaica's Shelly-Ann Fraser is surrounded by media as she celebrates winning the gold medal after the women's 100-metre final. - AP photos

.