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MELBOURNE, AUSTRALIA - JANUARY 21: Tommy Paul of the United States plays a forehand during his Men's Singles first round match against Leonardo Mayer of Argentina on day two of the 2020 Australian Open at Melbourne Park on January 21, 2020 in Melbourne, Australia. (Photo by Darrian Traynor/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 21:  Tommy Paul of the United States plays a forehand during his Men's Singles first round match against Leonardo Mayer of Argentina on day two of the 2020 Australian Open at Melbourne Park on January 21, 2020 in Melbourne, Australia. (Photo by Darrian Traynor/Getty Images)