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BRISBANE, AUSTRALIA - JANUARY 03: Alex De Minaur of Australia celebrates winning his match against Milos Raonic of Canada during day four of the 2018 Brisbane International at Pat Rafter Arena on January 3, 2018 in Brisbane, Australia. (Photo by Chris Hyde/Getty Images)

BRISBANE, AUSTRALIA - JANUARY 03:  Alex De Minaur of Australia celebrates winning his match against Milos Raonic of Canada during day four of the 2018 Brisbane International at Pat Rafter Arena on January 3, 2018 in Brisbane, Australia.  (Photo by Chris Hyde/Getty Images)