DAEGU, SOUTH KOREA - SEPTEMBER 03: Sanya Richards-Ross (L) of United States passes the relay baton on to Allyson Felix of United States during the women's 4x400 metres relay final during day eight of... more 
DAEGU, SOUTH KOREA - SEPTEMBER 03: Sanya Richards-Ross (L) of United States passes the relay baton on to Allyson Felix of United States during the women's 4x400 metres relay final during day eight of the 13th IAAF World Athletics Championships at the Daegu Stadium on September 3, 2011 in Daegu, South Korea. (Photo by Michael Steele/Getty Images) less 
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Getty Images | Photo By Michael Steele / Getty Images
Sat, Sep 3, 2011 10:41 AM EDT