Rio Olympics Athletics(01 of16)
Open Image ModalSouth Africa\'s Caster Semenya celebrates winning the gold medal in the women\'s 800-meter final during the athletics competitions of the 2016 Summer Olympics at the Olympic stadium in Rio de Janeiro, Brazil, Saturday, Aug. 20, 2016. (AP Photo/Martin Meissner) (credit:ASSOCIATED PRESS)
ATHLETICS-OLY-2016-RIO(02 of16)
Open Image ModalSouth Africa\'s Caster Semenya celebrates winning the Women\'s 800m Final during the athletics event at the Rio 2016 Olympic Games at the Olympic Stadium in Rio de Janeiro on August 20, 2016. / AFP / Adrian DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images) (credit:ADRIAN DENNIS via Getty Images)
Athletics - Olympics: Day 15(03 of16)
Open Image ModalRIO DE JANEIRO, BRAZIL - AUGUST 20: Caster Semenya of South Africa leads the field during the Women\'s 800 meter Final on Day 15 of the Rio 2016 Olympic Games at the Olympic Stadium on August 20, 2016 in Rio de Janeiro, Brazil. (Photo by Patrick Smith/Getty Images) (credit:Patrick Smith via Getty Images)
ATHLETICS-OLY-2016-RIO(04 of16)
Open Image ModalSouth Africa\'s Caster Semenya celebrates winning the Women\'s 800m Final during the athletics event at the Rio 2016 Olympic Games at the Olympic Stadium in Rio de Janeiro on August 20, 2016. / AFP / Adrian DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images) (credit:ADRIAN DENNIS via Getty Images)
Athletics - Olympics: Day 15(05 of16)
Open Image ModalRIO DE JANEIRO, BRAZIL - AUGUST 20: Caster Semenya of South Africa celebrates on the podium during the medal ceremony for the Women\'s 800 meter Final on Day 15 of the Rio 2016 Olympic Games at the Olympic Stadium on August 20, 2016 in Rio de Janeiro, Brazil. (Photo by Patrick Smith/Getty Images) (credit:Patrick Smith via Getty Images)
Athletics - Olympics: Day 15(06 of16)
Open Image ModalRIO DE JANEIRO, BRAZIL - AUGUST 20: Caster Semenya of South Africa celebrates on the podium during the medal ceremony for the Women\'s 800 meter Final on Day 15 of the Rio 2016 Olympic Games at the Olympic Stadium on August 20, 2016 in Rio de Janeiro, Brazil. (Photo by Patrick Smith/Getty Images) (credit:Patrick Smith via Getty Images)
Athletics - Olympics: Day 15(07 of16)
Open Image ModalRIO DE JANEIRO, BRAZIL - AUGUST 20: Gold medalist Caster Semenya of South Africa stands on the podium during the medal ceremony for the Women\'s 800 meter on Day 15 of the Rio 2016 Olympic Games at the Olympic Stadium on August 20, 2016 in Rio de Janeiro, Brazil. (Photo by Patrick Smith/Getty Images) (credit:Patrick Smith via Getty Images)
ATHLETICS-OLY-2016-RIO(08 of16)
Open Image ModalGold medallist South Africa\'s Caster Semenya (L) congratulates Belarus\' Marina Arzamasova after the Women\'s 800m Final during the athletics event at the Rio 2016 Olympic Games at the Olympic Stadium in Rio de Janeiro on August 20, 2016. / AFP / Adrian DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images) (credit:ADRIAN DENNIS via Getty Images)
Rio Olympics Athletics(09 of16)
Open Image ModalSouth Africa\'s Caster Semenya celebrates winning the women\'s 800-meter final during the athletics competitions of the 2016 Summer Olympics at the Olympic stadium in Rio de Janeiro, Brazil, Saturday, Aug. 20, 2016. (AP Photo/Martin Meissner) (credit:ASSOCIATED PRESS)
Rio Olympics Athletics(10 of16)
Open Image ModalSouth Africa\'s Caster Semenya prepares to compete in the women\'s 800-meter final during the athletics competitions of the 2016 Summer Olympics at the Olympic stadium in Rio de Janeiro, Brazil, Saturday, Aug. 20, 2016. (AP Photo/Martin Meissner) (credit:ASSOCIATED PRESS)
OLYMPICS-RIO-ATHLETICS-W-800M(11 of16)
Open Image Modal2016 Rio Olympics - Athletics - Final - Women\'s 800m Final - Olympic Stadium - Rio de Janeiro, Brazil - 20/08/2016. Caster Semenya (RSA) of South Africa celebrates winning the gold. REUTERS/Lucy Nicholson FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. (credit:Lucy Nicholson / Reuters)
OLYMPICS-RIO-ATHLETICS-W-800M(12 of16)
Open Image Modal2016 Rio Olympics - Athletics - Final - Women\'s 800m Final - Olympic Stadium - Rio de Janeiro, Brazil - 20/08/2016. First placed Caster Semenya (RSA) of South Africa greets Joanna Jozwik (POL) of Poland. REUTERS/David Gray FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. (credit:David Gray / Reuters)
OLYMPICS-RIO-ATHLETICS-W-800M(13 of16)
Open Image Modal2016 Rio Olympics - Athletics - Final - Women\'s 800m Final - Olympic Stadium - Rio de Janeiro, Brazil - 20/08/2016. First placed Caster Semenya (RSA) of South Africa stands with Lynsey Sharp (GBR) of Britain and Melissa Bishop (CAN) of Canada. REUTERS/David Gray FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. (credit:David Gray / Reuters)
OLYMPICS-RIO-ATHLETICS-W-800M(14 of16)
Open Image Modal2016 Rio Olympics - Athletics - Final - Women\'s 800m Final - Olympic Stadium - Rio de Janeiro, Brazil - 20/08/2016. Gold medallist Caster Semenya (RSA) of South Africa (R), with Lynsey Sharp (GBR) of Britain and Melissa Bishop (CAN) of Canada (468). REUTERS/Lucy Nicholson FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. (credit:Lucy Nicholson / Reuters)
OLYMPICS-RIO-ATHLETICS-W-800M(15 of16)
Open Image Modal2016 Rio Olympics - Athletics - Final - Women\'s 800m Final - Olympic Stadium - Rio de Janeiro, Brazil - 20/08/2016. Caster Semenya (RSA) of South Africa celebrates winning the gold medal. REUTERS/Dominic Ebenbichler FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. (credit:Dominic Ebenbichler / Reuters)
OLYMPICS-RIO-ATHLETICS-W-800M(16 of16)
Open Image Modal2016 Rio Olympics - Athletics - Final - Women\'s 800m Final - Olympic Stadium - Rio de Janeiro, Brazil- 20/08/2016. Caster Semenya (RSA) of South Africa celebrates after winning the race REUTERS/Ivan Alvarado FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. (credit:Ivan Alvarado / Reuters)