Novak Djokovic of Serbia returns the ball to Miomir Kecmanovic of Serbia during their ATP 250 Serbia Open quarter final singles tennis match in Belgrade, Serbia on April 23, 2021.//MILOSAVLJEVIC_1911.17624/2104241153/Credit:Pedja Milosavljevic/SIPA/2104241158,Image: 607603138, License: Rights-managed, Restrictions: , Model Release: no, Credit line: Profimedia

Novak Djokovic during his semi-final match Australian Open Tennis, Day Eleven, Melbourne Park, Australia - 18 Feb 2021,Image: 591782027, License: Rights-managed, Restrictions: , Model Release: no

Novak Djokovic plays a forehand shot from the ground French Open Tennis, Day Nine, Roland Garros, Paris, France - 07 Jun 2021,Image: 614663383, License: Rights-managed, Restrictions: , Model Release: no, Credit line: Profimedia