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RIO DE JANEIRO, BRAZIL - AUGUST 13: Andy Murray (R) of Great Britain talks with Kei Nishikori of Japan after their Men's Singles Semifinal Match on Day 8 of the Rio 2016 Olympic Games at the Olympic Tennis Centre on August 13, 2016 in Rio de Janeiro, Brazil. Murray defeated Nishikori 6-1, 6-4. (Photo by Clive Brunskill/Getty Images)

RIO DE JANEIRO, BRAZIL - AUGUST 13:  Andy Murray (R) of Great Britain talks with Kei Nishikori of Japan after their Men's Singles Semifinal Match on Day 8 of the Rio 2016 Olympic Games at the Olympic Tennis Centre on August 13, 2016 in Rio de Janeiro, Brazil. Murray defeated Nishikori 6-1, 6-4.  (Photo by Clive Brunskill/Getty Images)