Νέα Υόρκη - 5 Σεπτέμβριος 2016: Επαγγελματίας παίκτης του τένις Ίβο Κάρλοβιτς Hrvatske σε δράση κατά τη διάρκεια της μας ανοιχτά 2016 γύρο τέσσερα ταιριάζει στο Billie Jean βασιλιά εθνικό κέντρο αντισφαίρισης - Φωτογραφίες & Εικόνες Αρχείου

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

NEW YORK - AUGUST 27, 2018: Professional tennis player Karen Khachanov of Russia in action during first round match at the 2018 US Open at Billie Jean King National Tennis Center

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

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

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

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 - AUGUST 27, 2018: Professional tennis player Karen Khachanov of Russia in action during first round match at the 2018 US Open at Billie Jean King National Tennis Center

NEW YORK - AUGUST 31, 2017: Professional tennis player Grigor Dimitrov of Bulgaria in action during his US Open 2017 second round match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 27, 2018: Professional tennis player Grigor Dimitrov of Bulgaria in action during first round match at 2018 US Open at USTA National Tennis Center

NEW YORK - AUGUST 27, 2018: Grand Slam champion Juan Martin Del Potro of Argentina in action during his 2018 US Open first round match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 2, 2018: Professional tennis player John Isner of United States in action during his round of 16 match at 2018 US Open at Billie Jean King National Tennis Center in New York

NEW YORK - SEPTEMBER 2, 2018: Professional tennis player John Isner of United States in action during his round of 16 match at 2018 US Open at Billie Jean King National Tennis Center in New York

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 - AUGUST 27, 2018: Professional tennis player Karen Khachanov of Russia in action during first round match at the 2018 US Open at Billie Jean King National Tennis Center

NEW YORK - AUGUST 24 Professional tennis player David Ferrer practices for US Open 2014 at Billie Jean King National Tennis Center on August 24, 2014 in New York

NEW YORK - SEPTEMBER 2, 2018: Professional tennis player John Isner of United States in action during his round of 16 match at 2018 US Open at Billie Jean King National Tennis Center in New York

FLUSHING, NY - AUGUST 23: Grand Slam champion Andy Murray practices for US Open at Louis Armstrong Stadium at Billie Jean King National Tennis Center on August 23, 2012 in Flushing, NY.

NEW YORK - SEPTEMBER 3, 2016: Grand Slam champion Rafael Nadal of Spain in practice for US Open 2016 at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 1, 2019: 20-time Grand Slam champion Roger Federer of Switzerland in action during the 2019 US Open round of 16 match at National Tennis Center in New York

NEW YORK - SEPTEMBER 10, 2017: US Open 2017 finalist Kevin Andersen of South Africa in action during his US Open 2017 final match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 3, 2018: 13-time Grand Slam champion Novak Djokovic of Serbia in action during his 2018 US Open round of 16 match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 27, 2018: Grand Slam champion Juan Martin Del Potro of Argentina in action during his 2018 US Open first round match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 3, 2016: Grand Slam champion Rafael Nadal of Spain in practice for US Open 2016 at Billie Jean King National Tennis Center

NEW YORK - AUGUST 31, 2017: Grand Slam Champion Juan Martin del Potro of Argentina in action during his US Open 2017 second round match at Billie Jean King National Tennis Center