MELBOURNE, AUSTRALIA - JANUARY 18: Rafael Nadal plays a backhand in a practice session during day one of the 2016 Australian Open at Melbourne Park on January 18, 2016 in Melbourne, Australia. (Photo by Zak Kaczmarek/Getty Images)
MELBOURNE, AUSTRALIA - JANUARY 18: Rafael Nadal plays a backhand in a practice session during day one of the 2016 Australian Open at Melbourne Park on January 18, 2016 in Melbourne, Australia. (Photo by Zak Kaczmarek/Getty Images)