![Dubai, UAE. 25th February 2019. Former World no. 1 Roger Federer of Switzerland clearly unimpressed at a line call in his match against Philipp Kohlschreiber at the 2019 Dubai Duty Free Tennis Dubai, UAE. 25th February 2019. Former World no. 1 Roger Federer of Switzerland clearly unimpressed at a line call in his match against Philipp Kohlschreiber at the 2019 Dubai Duty Free Tennis](https://c8.alamy.com/comp/RRAXDR/dubai-uae-25th-february-2019-former-world-no-1-roger-federer-of-switzerland-clearly-unimpressed-at-a-line-call-in-his-match-against-philipp-kohlschreiber-at-the-2019-dubai-duty-free-tennis-championships-2019-a-7-time-champion-of-this-tournament-federer-won-6-4-3-6-6-1-in-his-first-game-at-this-years-edition-credit-feroz-khanalamy-live-news-RRAXDR.jpg)
Dubai, UAE. 25th February 2019. Former World no. 1 Roger Federer of Switzerland clearly unimpressed at a line call in his match against Philipp Kohlschreiber at the 2019 Dubai Duty Free Tennis
![Emirates News Agency - ATP finals champion Stefanos Tsitsipas to play at Mubadala World Tennis Championship Emirates News Agency - ATP finals champion Stefanos Tsitsipas to play at Mubadala World Tennis Championship](https://assets.wam.ae/uploads/2019/11/189683574457821327.jpg)
Emirates News Agency - ATP finals champion Stefanos Tsitsipas to play at Mubadala World Tennis Championship
![US Open Tennis 2019 Results: Friday Winners, Scores, Stats, Singles Draw Update | News, Scores, Highlights, Stats, and Rumors | Bleacher Report US Open Tennis 2019 Results: Friday Winners, Scores, Stats, Singles Draw Update | News, Scores, Highlights, Stats, and Rumors | Bleacher Report](https://img.bleacherreport.net/img/images/photos/003/826/942/hi-res-4f62901d591094b3b70f7c06db3a5392_crop_north.jpg?1567824569&w=3072&h=2048)
US Open Tennis 2019 Results: Friday Winners, Scores, Stats, Singles Draw Update | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
![Bianca Andreescu upsets Serena Williams to win 2019 US Open - Official Site of the 2022 US Open Tennis Championships - A USTA Event Bianca Andreescu upsets Serena Williams to win 2019 US Open - Official Site of the 2022 US Open Tennis Championships - A USTA Event](https://photo-assets.usopen.org/images/pics/large/f_USTA1189603_20190907_USO_D13_GE3_0899.jpg)
Bianca Andreescu upsets Serena Williams to win 2019 US Open - Official Site of the 2022 US Open Tennis Championships - A USTA Event
![Djokovic, Nadal, Federer headline 2019 US Open men's singles field - Official Site of the 2022 US Open Tennis Championships - A USTA Event Djokovic, Nadal, Federer headline 2019 US Open men's singles field - Official Site of the 2022 US Open Tennis Championships - A USTA Event](https://photo-assets.usopen.org/images/pics/large/b_novak_rafa_roger.jpg)
Djokovic, Nadal, Federer headline 2019 US Open men's singles field - Official Site of the 2022 US Open Tennis Championships - A USTA Event
![How the US Open Title Was Won: Bianca Andreescu, 2019 - Official Site of the 2022 US Open Tennis Championships - A USTA Event How the US Open Title Was Won: Bianca Andreescu, 2019 - Official Site of the 2022 US Open Tennis Championships - A USTA Event](https://photo-assets.usopen.org/images/pics/large/f_USTA1189514_20190907_USO_D13_DC20201.jpg)
How the US Open Title Was Won: Bianca Andreescu, 2019 - Official Site of the 2022 US Open Tennis Championships - A USTA Event
![Williams, Osaka, Barty highlight women's singles field for 2019 US Open - Official Site of the 2022 US Open Tennis Championships - A USTA Event Williams, Osaka, Barty highlight women's singles field for 2019 US Open - Official Site of the 2022 US Open Tennis Championships - A USTA Event](https://photo-assets.usopen.org/images/pics/large/b_serena_osaka_barty.jpg)
Williams, Osaka, Barty highlight women's singles field for 2019 US Open - Official Site of the 2022 US Open Tennis Championships - A USTA Event
Australian Open 2019: Tennis greats Kim Clijsters, Martina Navratilova say Ash Barty can win the tournament
![Djokovic, Federer and Nadal still dominant in the 2019 US Open - Official Site of the 2022 US Open Tennis Championships - A USTA Event Djokovic, Federer and Nadal still dominant in the 2019 US Open - Official Site of the 2022 US Open Tennis Championships - A USTA Event](https://photo-assets.usopen.org/images/pics/large/f_novak_federer_nadal.jpg)
Djokovic, Federer and Nadal still dominant in the 2019 US Open - Official Site of the 2022 US Open Tennis Championships - A USTA Event
![18-time Grand Slam Champion Rafael Nadal of Spain in Action during His 2019 US Open Third Round Match Editorial Image - Image of gate, forehand: 160424715 18-time Grand Slam Champion Rafael Nadal of Spain in Action during His 2019 US Open Third Round Match Editorial Image - Image of gate, forehand: 160424715](https://thumbs.dreamstime.com/z/time-grand-slam-champion-rafael-nadal-spain-action-his-us-open-third-round-match-new-york-august-time-grand-slam-160424715.jpg)
18-time Grand Slam Champion Rafael Nadal of Spain in Action during His 2019 US Open Third Round Match Editorial Image - Image of gate, forehand: 160424715
Australian Open - Let's hear it for our 2019 #AusOpen champion Naomi Osaka 大坂なおみ! The Japanese 21 year-old defeats Petra Kvitova 7-6(2) 5-7 6-4 to win her first Australian Open title 🏆.
![Roger Federer at the 2019 Wimbledon Championships. He is a Swiss champion in the tennis world. Photo Credits: Getty Imag… | Roger federer, Tennis, Federer wimbledon Roger Federer at the 2019 Wimbledon Championships. He is a Swiss champion in the tennis world. Photo Credits: Getty Imag… | Roger federer, Tennis, Federer wimbledon](https://i.pinimg.com/736x/c0/1b/40/c01b40844d5529e12cb4ee56d88cad42.jpg)