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(L-R) Argentina's Leonardo Mayer, Guido Pella, Federico Delbonis, Juan martin del Potro and coach Daniel Orsanic celebrate with the trophy after winning the Davis Cup World Group final between Croatia and Argentina on November 27, 2016 at the Arena hall in Zagreb. / AFP / - (Photo credit should read -/AFP via Getty Images)

(L-R)  Argentina's  Leonardo Mayer, Guido Pella, Federico Delbonis, Juan martin del Potro and coach  Daniel Orsanic celebrate with the trophy after winning the Davis Cup World Group final between Croatia and Argentina on November 27, 2016 at the Arena hall in Zagreb.  / AFP / -        (Photo credit should read -/AFP via Getty Images)