MELBOURNE, AUSTRALIA - JANUARY 19: Roger Federer of Switzerland plays a backhand during practice ahead of the 2020 Australian Open at Melbourne Park on January 19, 2020 in Melbourne, Australia. (Photo by Clive Brunskill/Getty Images)
MELBOURNE, AUSTRALIA - JANUARY 19: Roger Federer of Switzerland plays a backhand during practice ahead of the 2020 Australian Open at Melbourne Park on January 19, 2020 in Melbourne, Australia. (Photo by Clive Brunskill/Getty Images)