London Olympics Opening Ceremony

South Africa's Caster Semenya carries the flag. (Jae C. Hong/AP Photo)

South Africa’s Caster Semenya carries the flag. (Jae C. Hong/AP Photo)

South Africa’s Caster Semenya carries the flag during the Opening Ceremony at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Jae C. Hong)