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LONDON, ENGLAND - JULY 14: Novak Djokovic of Serbia pats the court after beating Roger Federer of Switzerland in the Final of the Gentleman's Singles on Day Thirteen of The Championships - Wimbledon 2019 at All England Lawn Tennis and Croquet Club on July 14, 2019 in London, England. (Photo by Visionhaus/Getty Images)

LONDON, ENGLAND - JULY 14: Novak Djokovic of Serbia pats the court after beating Roger Federer of Switzerland in the Final of the Gentleman's Singles on Day Thirteen of The Championships - Wimbledon 2019 at All England Lawn Tennis and Croquet Club on July 14, 2019 in London, England. (Photo by Visionhaus/Getty Images)