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PARIS, FRANCE - JUNE 03: Alexander Zverev of Germany plays a forehand during his mens singles fourth round match against Fabio Fognini of Italy during Day nine of the 2019 French Open at Roland Garros on June 03, 2019 in Paris, France. (Photo by Clive Mason/Getty Images)

PARIS, FRANCE - JUNE 03: Alexander Zverev of Germany plays a forehand during his mens singles fourth round match against Fabio Fognini of Italy during Day nine of the 2019 French Open at Roland Garros on June 03, 2019 in Paris, France. (Photo by Clive Mason/Getty Images)