Νέα Υόρκη - 6 Σεπτεμβρίου 2017: Grand Slam πρωταθλητή Roger Federer Ελβετία κατά τη διάρκεια της μας ανοιχτά 2017 προημιτελικό αγώνα του ενάντια Juan Martin Del Potro στο Arthur Ashe Stadium - Φωτογραφίες & Εικόνες Αρχείου

NEW YORK - SEPTEMBER 6, 2017: Grand Slam champion Roger Federer of Switzerland during his US Open 2017 quarterfinal match against Juan Martin Del Potro at Arthur Ashe Stadium

NEW YORK - AUGUST 29, 2017: Grand Slam champion Roger Federer of Switzerland in action during his US Open 2017 first round match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 6, 2017: Grand Slam champion Roger Federer of Switzerland during his US Open 2017 quarterfinal match against Juan Martin Del Potro at Arthur Ashe Stadium

NEW YORK - SEPTEMBER 6, 2017: Grand Slam champion Roger Federer of Switzerland during his US Open 2017 quarterfinal match against Juan Martin Del Potro at Arthur Ashe Stadium

NEW YORK - SEPTEMBER 6, 2017: Grand Slam champion Roger Federer of Switzerland during his US Open 2017 quarterfinal match against Juan Martin Del Potro at Arthur Ashe Stadium

NEW YORK - AUGUST 28, 2018: 20-time Grand Slam champion Roger Federer of Switzerland in action during the 2018 US Open first round match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 31, 2017: Grand Slam champion Roger Federer of Switzerland in action during his US Open 2017 round 2 match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 29, 2017: Grand Slam champion Roger Federer of Switzerland in action during his US Open 2017 first round match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 4, 2017: Grand Slam champion Roger Federer of Switzerland in action during his US Open 2017 round 4 match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 31, 2017: Grand Slam champion Roger Federer of Switzerland in action during his US Open 2017 round 2 match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 4, 2017: Grand Slam champion Roger Federer of Switzerland in action during his US Open 2017 round 4 match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 31, 2017: Grand Slam champion Roger Federer of Switzerland in action during his US Open 2017 round 2 match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 10, 2017: Grand Slam champion Rafael Nadal of Spain in action during his US Open 2017 final match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 31, 2017: Grand Slam champion Roger Federer of Switzerland in action during his US Open 2017 round 2 match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 31, 2017: Grand Slam champion Roger Federer of Switzerland in action during his US Open 2017 round 2 match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 31, 2017: Grand Slam champion Roger Federer of Switzerland in action during his US Open 2017 round 2 match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 26 Seventeen times Grand Slam champion Roger Federer during first round match at US Open 2014 against Marinko Matosevic at Arthur Ashe Stadium on August 26, 2014 in New York

NEW YORK - SEPTEMBER 8, 2017: Grand Slam champion Rafael Nadal of Spain in action during his US Open 2017 semifinal match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 4, 2017: Grand Slam champion Roger Federer of Switzerland celebrates victory after his US Open 2017 round 4 match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 4, 2017: Grand Slam champion Roger Federer of Switzerland in action during his US Open 2017 round 4 match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 28, 2018: 20-time Grand Slam champion Roger Federer of Switzerland in action during the 2018 US Open first round match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 8, 2017: Grand Slam champion Rafael Nadal of Spain in action during his US Open 2017 semifinal match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 10, 2017: Grand Slam champion Rafael Nadal of Spain in action during his US Open 2017 final match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 3, 2019: 20-time Grand Slam champion Roger Federer of Switzerland in action during the 2019 US Open quarter-final match against Grigor Dimitrov in New York

FLUSHING, NY -SEPTEMBER 2: Seventeen times Grand Slam champion Roger Federer during his fourth round match at US Open 2013 against Tommy Robredo at Billie Jean King National Tennis Center on September 2, 2013 in Flushing, NY

NEW YORK - SEPTEMBER 3, 2018: 20-time Grand Slam champion Roger Federer of Switzerland in action during the 2018 US Open round of 16 match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 31, 2017: Grand Slam champion Roger Federer of Switzerland in action during his US Open 2017 round 2 match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 3, 2018: 20-time Grand Slam champion Roger Federer of Switzerland in action during the 2018 US Open round of 16 match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 31, 2017: Grand Slam champion Roger Federer of Switzerland in action during his US Open 2017 round 2 match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 31, 2017: Grand Slam champion Roger Federer of Switzerland in action during his US Open 2017 round 2 match at Billie Jean King National Tennis Center