Νέα Υόρκη - 9 Σεπτεμβρίου 2017: Μας ανοιχτή 2017 μικτό πρωτοπόρος Jamie Murray της Μεγάλης Βρετανίας σε δράση κατά τη διάρκεια του τελικού αγώνα στο Billie Jean βασιλιά Εθνικό Κέντρο Αντισφαίρισης στη Νέα Υόρκη - Φωτογραφίες & Εικόνες Αρχείου

NEW YORK - SEPTEMBER 2, 2018: Professional tennis player Dominic Thiem of Austria in action during his 2018 US Open round of 16 match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 22, 2018: 13-time Grand Slam champion Novak Djokovic of Serbia practices for the 2018 US Open at Billie Jean King National Tennis

NEW YORK - SEPTEMBER 9, 2017: US Open 2017 mixed doubles champion Jamie Murray of Great Britain in action during final match at Billie Jean King National Tennis Center in New York

NEW YORK - SEPTEMBER 9, 2017: US Open 2017 mixed doubles champion Jimmy Murray of Great Britain in action during final match at Billie Jean King National Tennis Center in New York

FLUSHING, NY - AUGUST 26 Professional tennis player Andreas Haider-Maurer from Austria during his first round match against Ernests Gulbis from Latvia at US Open 2013 on August 26, 2013 in Flushing, NY

NEW YORK - SEPTEMBER 5, 2016: Grand Slam Champion Andy Murray of Great Britain in action during US Open 2016 round four match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 7, 2018: 2018 US Open men' doubles champion Mike Bryan of United States in action during final match at the Billie Jean King National Tennis Center

NEW YORK - AUGUST 22, 2018: 13-time Grand Slam champion Novak Djokovic of Serbia practices for the 2018 US Open at Billie Jean King National Tennis

NEW YORK - SEPTEMBER 9, 2017: US Open 2017 mixed doubles champion Jamie Murray of Great Britain in action during final match at Billie Jean King National Tennis Center in New York

NEW YORK -SEPTEMBER 6, 2016: Grand Slam champion Bob Bryan in action during US Open 2016 quarterfinal doubles match at Billie Jean King National Tennis Center in New York

NEW YORK - SEPTEMBER 5, 2016: Professional tennis player Ivo Karlovic of Croatia in action during US Open 2016 round four match at Billie Jean King National Tennis Center

FLUSHING, NY - SEPTEMBER 3 Professional tennis player Novak Djokovic during fourth round match at US Open 2013 against Marcel Granollers at Billie Jean King National Tennis Center on September 3, 2013 in Flushing, NY

NEW YORK -SEPTEMBER 6, 2016: Grand Slam champion Bob Bryan in action during US Open 2016 quarterfinal doubles match at Billie Jean King National Tennis Center in New York

NEW YORK - AUGUST 28, 2017: Professional tennis player Denis Shapovalov of Canada in action during his US Open 2017 first round match at Billie Jean King National Tennis Center in New York

FLUSHING, NY - AUGUST 29: Twelve times Grand Slam champion Rafael Nadal practices for US Open 2013 at Arthur Ashe Stadium at Billie Jean King National Tennis Center on August 29, 2013 in Flushing, NY

NEW YORK - AUGUST 23, 2017: Nineteen times Grand Slam Champion Roger Federer of Switzerland practices for US Open 2017 at Billie Jean King National Tennis Center in New York

NEW YORK - AUGUST 22, 2018: 13-time Grand Slam champion Novak Djokovic of Serbia practices for the 2018 US Open at Billie Jean King National Tennis

FLUSHING, NY - SEPTEMBER 7: Professional tennis player Richard Gasquet during his semifinal match at US Open 2013 against twelve times Grand Slam champion Rafael Nadal at Arthur Ashe Stadium on September 7, 2013 in Flushing, NY

NEW YORK - SEPTEMBER 1, 2018: Professional tennis player Alexander Zverev of Germany in action during his 2018 US Open round of 32 match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 30: Grand Slam Champion Andy Murray during third round match at US Open 2014 against Alex Kuznetsov at Billie Jean King National Tennis Center on August 30 , 2014 in New York

NEW YORK - SEPTEMBER 2, 2018: Professional tennis player Dominic Thiem of Austria in action during his 2018 US Open round of 16 match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 25, 2015: Grand Slam Champion Andy Murray practices for US Open 2015 at Billie Jean King National Tennis Center in New York