RIO DE JANEIRO, BRAZIL - AUGUST 12: Katie Ledecky of United States in action during the final women's800m freestyle at Olympic Aquatics Stadium on August 12, 2016 in Rio de Janeiro, Brazil. (Photo by Xavier Laine/Getty Images)
RIO DE JANEIRO, BRAZIL - AUGUST 12: Katie Ledecky of United States in action during the final women's800m freestyle at Olympic Aquatics Stadium on August 12, 2016 in Rio de Janeiro, Brazil. (Photo by Xavier Laine/Getty Images)