![Novak Djokovic, of Serbia, celebrates after defeating Roger Federer, of Switzerland, in the finals at the Western & Southern Open tennis tournament, Sunday, Aug. 19, 2018, in Mason, Ohio. (AP Photo/John Minchillo Novak Djokovic, of Serbia, celebrates after defeating Roger Federer, of Switzerland, in the finals at the Western & Southern Open tennis tournament, Sunday, Aug. 19, 2018, in Mason, Ohio. (AP Photo/John Minchillo](https://c8.alamy.com/comp/2MMR009/novak-djokovic-of-serbia-celebrates-after-defeating-roger-federer-of-switzerland-in-the-finals-at-the-western-southern-open-tennis-tournament-sunday-aug-19-2018-in-mason-ohio-ap-photojohn-minchillo-2MMR009.jpg)
Novak Djokovic, of Serbia, celebrates after defeating Roger Federer, of Switzerland, in the finals at the Western & Southern Open tennis tournament, Sunday, Aug. 19, 2018, in Mason, Ohio. (AP Photo/John Minchillo
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