(L-R) Silver medallists Jamaica's Javon Francis,  Fitzroy Dunkley,  Nathon Allen and  Peter Matthews; Gold medallists USA's Lashawn Merritt, Gil Roberts, Tony McQuay and Arman Hall; and Bronze medallists Bahamas's Christopher Brown, Bahamas's Steven Gardiner, Bahamas's Michael Mathieu and Bahamas's Alonzo Russell  pose on the podium of the Men's 4x400m Relay Final during the athletics event at the Rio 2016 Olympic Games at the Olympic Stadium in Rio de Janeiro on August 20, 2016. / AFP / Eric FEFERBERG        (Photo credit should read ERIC FEFERBERG/AFP/Getty Images)