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MELBOURNE, AUSTRALIA - JANUARY 23: Roger Federer of Switzerland shakes hands with Andreas Seppi of Italy after Federer lost their third round match against during day five of the 2015 Australian Open at Melbourne Park on January 23, 2015 in Melbourne, Australia. (Photo by Patrick Scala/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 23:  Roger Federer of Switzerland shakes hands with Andreas Seppi of Italy after Federer lost their third round match against  during day five of the 2015 Australian Open at Melbourne Park on January 23, 2015 in Melbourne, Australia.  (Photo by Patrick Scala/Getty Images)