MONTE-CARLO, MONACO - APRIL 19: Novak Djokovic of Serbia in action during day 6 of the Rolex Monte-Carlo Masters 2019 at the Monte-Carlo Country Club on April 19, 2019 in Monte-Carlo, Monaco. (Photo by Jean Catuffe/Getty Images)
MONTE-CARLO, MONACO - APRIL 19: Novak Djokovic of Serbia in action during day 6 of the Rolex Monte-Carlo Masters 2019 at the Monte-Carlo Country Club on April 19, 2019 in Monte-Carlo, Monaco. (Photo by Jean Catuffe/Getty Images)