(LtoR) US Calvin Smith, US Kyle Clemons, US Kind Butler III and US David Verburg  celebrate winning in the Men 4 x 400 m relay Final event at the IAAF World Indoor Athletics Championships in the Ergo Arena in the Polish coastal town of Sopot, on March 9, 2014.  AFP PHOTO / JOHANNES EISELE        (Photo credit should read JOHANNES EISELE/AFP/Getty Images)