MELBOURNE, AUSTRALIA - JANUARY 18: Stan Wawrinka of Switzerland returns a shot against Steve Johnson of United States during the 2017 Australian Open at Melbourne Park in Melbourne, Australia on January 18, 2017. Stan Wawrinka of Switzerland makes it to 3rd round by winning 3-0 against Steve Johnson of United States. (Photo by Recep Sakar/Anadolu Agency/Getty Images)
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