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MELBOURNE, AUSTRALIA - JANUARY 18: Roger Federer of Switzerland plays a forehand in his third round match against Taylor Fritz of the United States during day five of the 2019 Australian Open at Melbourne Park on January 18, 2019 in Melbourne, Australia. (Photo by Quinn Rooney/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 18:  Roger Federer of Switzerland plays a forehand in his third round match against Taylor Fritz of the United States during day five of the 2019 Australian Open at Melbourne Park on January 18, 2019 in Melbourne, Australia.  (Photo by Quinn Rooney/Getty Images)