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RIO DE JANEIRO, BRAZIL - AUGUST 16: Ferry Weertman of Netherlands competes in the Men's 10km Marathon Swim on Day 11 of the Rio 2016 Olympic Games at Fort Copacabana on August 16, 2016 in Rio de Janeiro, Brazil. (Photo by Quinn Rooney/Getty Images)

RIO DE JANEIRO, BRAZIL - AUGUST 16:  Ferry Weertman of Netherlands competes in the Men's 10km Marathon Swim on Day 11 of the Rio 2016 Olympic Games at Fort Copacabana on August 16, 2016 in Rio de Janeiro, Brazil.  (Photo by Quinn Rooney/Getty Images)

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Gold medallist Ferry Weertman of Netherland's poses during the podium ceremony of the Men's 10km marathon swimming in Copacabana on August 16, 2016 during the Olympic Games in Rio de Janeiro. / AFP / YASUYOSHI CHIBA (Photo credit should read YASUYOSHI CHIBA/AFP/Getty Images)

Gold medallist Ferry Weertman of Netherland's poses during the podium ceremony of the Men's 10km marathon swimming in Copacabana on August 16, 2016 during the Olympic Games in Rio de Janeiro.  / AFP / YASUYOSHI CHIBA        (Photo credit should read YASUYOSHI CHIBA/AFP/Getty Images)

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Gold medallist Ferry Weertman (C) of Netherland's, silver medallist Spiros Gianniotis (L) and bronze medallist Marc-Antoine Olivier of France pose during the podium ceremony of the Men's 10km marathon swimming in Copacabana on August 16, 2016 during the Olympic Games in Rio de Janeiro. / AFP / YASUYOSHI CHIBA (Photo credit should read YASUYOSHI CHIBA/AFP/Getty Images)

Gold medallist Ferry Weertman (C) of Netherland's, silver medallist Spiros Gianniotis (L) and bronze medallist Marc-Antoine Olivier of France pose during the podium ceremony of the Men's 10km marathon swimming in Copacabana on August 16, 2016 during the Olympic Games in Rio de Janeiro.  / AFP / YASUYOSHI CHIBA        (Photo credit should read YASUYOSHI CHIBA/AFP/Getty Images)