RIO DE JANEIRO, BRAZIL - AUGUST 08: Rafael Nadal and Marc Lopez of Spain and Juan Martin Del Potro and Maximo Gonzalez of Argentina shake hands after the Men's Doubles second round match on against Day 3 of the Rio 2016 Olympic Games at the Olympic Tennis Centre on August 8, 2016 in Rio de Janeiro, Brazil. (Photo by Clive Brunskill/Getty Images)
