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RIO DE JANEIRO, BRAZIL - AUGUST 15:  Shaunae Miller of the Bahamas dives over the finish line to win 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 dives over the finish line to win 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)

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Allyson Felix beaten by Shaunae Miller in 400m final

Alyson Felix was denied a fifth Olympic gold medal after being edged out by Shauntae Miller of the Bahamas in a thrilling women's 400-meter final at Rio 2016. CNN's Christina Macfarlane has more.

Allyson Felix beaten by Shaunae Miller in 400m final

Alyson Felix was denied a fifth Olympic gold medal after being edged out by Shauntae Miller of the Bahamas in a thrilling women's 400-meter final at Rio 2016. CNN's Christina Macfarlane has more.