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RIO DE JANEIRO, BRAZIL - AUGUST 06: Yuichi Sugita of Japan in action against Brian Baker of the United States in their 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)

RIO DE JANEIRO, BRAZIL - AUGUST 06:  Yuichi Sugita of Japan in action against Brian Baker of the United States in their 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)