RIO DE JANEIRO, BRAZIL - AUGUST 08: Novak Djokovic and Nenad Zimonjic of Serbia in discussion during the Men's Doubles second round match against Bruno Soares and Marcelo Melo of Brazil on 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)
