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SYDNEY, AUSTRALIA - JANUARY 11: Adrian Mannarino of France plays a forehand in his quarter final round match against Fabio Fognini of Italy during day five of the 2018 Sydney International at Sydney Olympic Park Tennis Centre on January 11, 2018 in Sydney, Australia. (Photo by Steve Christo - Corbis/Corbis via Getty Images)

SYDNEY, AUSTRALIA - JANUARY 11:  Adrian Mannarino of France plays a forehand in his quarter final round match against Fabio Fognini of Italy during day five of the 2018 Sydney International at Sydney Olympic Park Tennis Centre on January 11, 2018 in Sydney, Australia.  (Photo by Steve Christo - Corbis/Corbis via Getty Images)