SOPOT, POLAND - MARCH 9:   (L-R) Kind Butler III, David Verburg, Calvin Smith and Kyle Clemonsthe of the United States pose after winning  the gold medal in the Men 4 x 400 m relay Final event on the third day of the IAAF World Indoor Athletics Championships at Ergo Arena on March 9, 2014 in Sopot, Poland. (Photo by Jiro Mochizuki/Anadolu Agency/Getty Images)