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MELBOURNE, AUSTRALIA - JANUARY 16: Roger Federer of Switzerland plays a forehand in his first round match against Aljaz Bedene of Slovenia on day two of the 2018 Australian Open at Melbourne Park on January 16, 2018 in Melbourne, Australia. (Photo by Ryan Pierse/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 16:  Roger Federer of Switzerland plays a forehand in his first round match against Aljaz Bedene of Slovenia on day two of the 2018 Australian Open at Melbourne Park on January 16, 2018 in Melbourne, Australia.  (Photo by Ryan Pierse/Getty Images)