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Rio , Brazil - 2 August 2016; Rafael Nadal of Spain during a practice session in the Olympic Tennis Centre ahead of the start of the 2016 Rio Summer Olympic Games in Rio de Janeiro, Brazil. (Photo By Brendan Moran/Sportsfile via Getty Images)

Rio , Brazil - 2 August 2016; Rafael Nadal of Spain during a practice session in the Olympic Tennis Centre ahead of the start of the 2016 Rio Summer Olympic Games in Rio de Janeiro, Brazil. (Photo By Brendan Moran/Sportsfile via Getty Images)