VILLA MARTELLI, ARGENTINA - JULY 18: Juan Martin Del Potro greets Carlos Berlocq of Argentina after winning a quarter final doubles match between Carlos Berlocq / Leonardo Mayer (ARG) and Viktor Troicki / Nenan Zimonjic (SRB) as part of Davis Cup 2015 at Tecnopolis on July 18, 2015 in Villa Martelli, Argentina. (Photo by Gabriel Rossi/LatinContent via Getty Images)
