South Africa's Caster Semenya, left, and Kenya's Janeth Jepkosgei Busienei compete in the women's 800-meter semifinal during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, ... more 
South Africa's Caster Semenya, left, and Kenya's Janeth Jepkosgei Busienei compete in the women's 800-meter semifinal during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Matt Slocum) less 
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Associated Press | Photo By Matt Slocum
Thu, Aug 9, 2012 3:17 PM EDT