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MELBOURNE, AUSTRALIA - JANUARY 18: Leonardo Mayer of Argentina plays a backhand in his first round match against Dominic Thiem of Austria during day one of the 2016 Australian Open at Melbourne Park on January 18, 2016 in Melbourne, Australia. (Photo by Pat Scala/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 18:  Leonardo Mayer of Argentina plays a backhand in his first round match against Dominic Thiem of Austria during day one of the 2016 Australian Open at Melbourne Park on January 18, 2016 in Melbourne, Australia.  (Photo by Pat Scala/Getty Images)