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RIO DE JANEIRO, BRAZIL - AUGUST 02: Andy Murray of Great Britain plays a backhand during a practice session ahead of the Rio 2016 Olympic Games at the Olympic Tennis Centre on August 2, 2016 in Rio de Janeiro, Brazil. (Photo by Clive Brunskill/Getty Images)

RIO DE JANEIRO, BRAZIL - AUGUST 02:  Andy Murray of Great Britain plays a backhand during a practice session ahead of the Rio 2016 Olympic Games at the Olympic Tennis Centre on August 2, 2016 in Rio de Janeiro, Brazil.  (Photo by Clive Brunskill/Getty Images)