RIO DE JANEIRO, BRAZIL - AUGUST 07:  (L-R) Silver medalist Jazz Carlin of Great Britain, gold medalist Katie Ledecky of the United States and bronze medalist Leah Smith of the United States pose on the podium during the medal ceremony for the Women's 400m Freestyle Final on Day 2 of the Rio 2016 Olympic Games at the Olympic Aquatics Stadium on August 7, 2016 in Rio de Janeiro, Brazil.  (Photo by Clive Rose/Getty Images)