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MELBOURNE, AUSTRALIA - JANUARY 22: Marius Copil of Romania plays a backhand in his second round match against Stanislas Wawrinka of Switzerland during day four of the 2015 Australian Open at Melbourne Park on January 22, 2015 in Melbourne, Australia. (Photo by Mark Kolbe/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 22:  Marius Copil of Romania plays a backhand in his second round match against Stanislas Wawrinka of Switzerland during day four of the 2015 Australian Open at Melbourne Park on January 22, 2015 in Melbourne, Australia.  (Photo by Mark Kolbe/Getty Images)