MELBOURNE, AUSTRALIA - JANUARY 19: Alexander Zverev of Germany practices ahead of the 2020 Australian Open at Melbourne Park on January 19, 2020 in Melbourne, Australia. (Photo by Mike Owen/Getty Images)
MELBOURNE, AUSTRALIA - JANUARY 19: Alexander Zverev of Germany practices ahead of the 2020 Australian Open at Melbourne Park on January 19, 2020 in Melbourne, Australia. (Photo by Mike Owen/Getty Images)