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MELBOURNE, AUSTRALIA - JANUARY 29: Roger Federer of Switzerland poses with the Norman Brookes Challenge Cup after winning the 2018 Australian Open Men's Singles Final, at Government House on January 29, 2018 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 29:  Roger Federer of Switzerland poses with the Norman Brookes Challenge Cup after winning the 2018 Australian Open Men's Singles Final, at Government House on January 29, 2018 in Melbourne, Australia.  (Photo by Michael Dodge/Getty Images)