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MELBOURNE, AUSTRALIA - JANUARY 22: Tennys Sandgren of the United States plays a backhand during his Men's Singles second round match against Matteo Berrettini of Italy on day three of the 2020 Australian Open at Melbourne Park on January 22, 2020 in Melbourne, Australia. (Photo by Hannah Peters/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 22: Tennys Sandgren of the United States plays a backhand during his Men's Singles second round match against Matteo Berrettini of Italy on day three of the 2020 Australian Open at Melbourne Park on January 22, 2020 in Melbourne, Australia. (Photo by Hannah Peters/Getty Images)