Juan Martin Del Potro v David Ferrer - Exhibition Match [Getty Images]

PILAR, ARGENTINA - DECEMBER 27: Juan Martin Del Potro of Argentina takes a backhand shot during the exhibition match between Juan Martin Del Potro and David Ferrer at DirecTV Arena Stadium on December 27, 2016 in Pilar, Buenos Aires, Argentina. (Photo by Gabriel Rossi/LatinContent via Getty Images)

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