Lesley Pattinama Kerkhove Pictures
RIO DE JANEIRO, BRAZIL - AUGUST 06: Novak Djokovic and Nenad Zimonjic of Serbia in action against Marin Ciilic and Marin Draganja of Croatia in their doubles first round match on Day 1 of the Rio 2016 Olympic Games at the Olympic Tennis Centre on August 6, 2016 in Rio de Janeiro, Brazil. (Photo by Clive Brunskill/Getty Images)