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RIO DE JANEIRO, BRAZIL - AUGUST 7: Gold medalist Katie Ledecky of USA celebrates winning the Women's 400m Freestyle Final during the swimming competition of the 2016 Olympic Games at Olympic Aquatics Stadium on August 7, 2016 in Rio de Janeiro, Brazil. (Photo by Jean Catuffe/Getty Images)

RIO DE JANEIRO, BRAZIL - AUGUST 7: Gold medalist Katie Ledecky of USA celebrates winning the Women's 400m Freestyle Final during the swimming competition of the 2016 Olympic Games at Olympic Aquatics Stadium on August 7, 2016 in Rio de Janeiro, Brazil. (Photo by Jean Catuffe/Getty Images)