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Bahamas' Shaunae Miller (L) falls at the finish line ahead of USA's Allyson Felix to win the Women's 400m Final during the athletics competition at the Rio 2016 Olympic Games at the Olympic Stadium in Rio de Janeiro on August 15, 2016. / AFP / Adrian DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)

Bahamas' Shaunae Miller (L) falls at the finish line ahead of USA's Allyson Felix to win the Women's 400m Final during the athletics competition at the Rio 2016 Olympic Games at the Olympic Stadium in Rio de Janeiro on August 15, 2016. / AFP / Adrian DENNIS        (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)

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RIO DE JANEIRO, BRAZIL - AUGUST 15: Shaunae Miller of the Bahamas reacts after winning the gold medal in the Women's 400m Final on Day 10 of the Rio 2016 Olympic Games at the Olympic Stadium on August 15, 2016 in Rio de Janeiro, Brazil. (Photo by Alexander Hassenstein/Getty Images)

RIO DE JANEIRO, BRAZIL - AUGUST 15:  Shaunae Miller of the Bahamas reacts after winning the gold medal in the Women's 400m Final on Day 10 of the Rio 2016 Olympic Games at the Olympic Stadium on August 15, 2016 in Rio de Janeiro, Brazil.  (Photo by Alexander Hassenstein/Getty Images)