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MELBOURNE, AUSTRALIA - JANUARY 18: Alex De Minaur of Australia plays a backhand in his third round match against Rafael Nadal of Spain during day five of the 2019 Australian Open at Melbourne Park on January 18, 2019 in Melbourne, Australia. (Photo by Scott Barbour/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 18:  Alex De Minaur of Australia plays a backhand in his third round match against Rafael Nadal of Spain during day five of the 2019 Australian Open at Melbourne Park on January 18, 2019 in Melbourne, Australia.  (Photo by Scott Barbour/Getty Images)