RIO DE JANEIRO, BRAZIL - AUGUST 13: Nathan Adrian, Michael Phelps, Ryan Murphy, Cody Miller of USA celebrate their gold medal in the Men's 4 x 100m Medley Relay on day 8 of the Rio 2016 Olympic Games at Olympic Aquatics Stadium on August 13, 2016 in Rio de Janeiro, Brazil. (Photo by Jean Catuffe/Getty Images)