Allison Felix of the United States becomes the youngest sprint world champion at age 19. Included in the field are Rochelle Smith of the United States and Christine Arron of France who also make it to the medal podium.
Women's 400m Final
A very tight finish between Sanya Richards, Tonique Williams Darling and a fast closing Ana Guevara.
Men's 400 Meter Hurdles Final.
Women's 100 Meter Hurdles Final.
Michelle Perry shocks the world to win this race from Helsenki. Olympic champion Joanna Hayes will be DQ'ed when she crashes into the last hurdle.
