![Switzerland's Roger Federer returns to Germany's Mischa Zverev during their Men's Singles Match on day six at the Wimbledon Tennis Championships in London Saturday, July 8, 2017. (AP Photo/Tim Ireland Stock Photo - Switzerland's Roger Federer returns to Germany's Mischa Zverev during their Men's Singles Match on day six at the Wimbledon Tennis Championships in London Saturday, July 8, 2017. (AP Photo/Tim Ireland Stock Photo -](https://c8.alamy.com/comp/2MT8WTB/switzerlands-roger-federer-returns-to-germanys-mischa-zverev-during-their-mens-singles-match-on-day-six-at-the-wimbledon-tennis-championships-in-london-saturday-july-8-2017-ap-phototim-ireland-2MT8WTB.jpg)
Switzerland's Roger Federer returns to Germany's Mischa Zverev during their Men's Singles Match on day six at the Wimbledon Tennis Championships in London Saturday, July 8, 2017. (AP Photo/Tim Ireland Stock Photo -
![US Open results 2017: Roger Federer survives 1st-round threat from 19-year-old Frances Tiafoe - SBNation.com US Open results 2017: Roger Federer survives 1st-round threat from 19-year-old Frances Tiafoe - SBNation.com](https://cdn.vox-cdn.com/thumbor/iRjK9SD6QPBX8ZV47oDbVbJGh0Q=/0x0:4356x2904/1400x1400/filters:focal(1903x428:2599x1124):format(jpeg)/cdn.vox-cdn.com/uploads/chorus_image/image/56427529/840683524.0.jpg)
US Open results 2017: Roger Federer survives 1st-round threat from 19-year-old Frances Tiafoe - SBNation.com
![Germany's Mischa Zverev returns a ball to Switzerland's Roger Federer during their match at the Italian Germany's Mischa Zverev returns a ball to Switzerland's Roger Federer during their match at the Italian](https://c8.alamy.com/comp/2P8H8E1/germanys-mischa-zverev-returns-a-ball-to-switzerlands-roger-federer-during-their-match-at-the-italian-rome-masters-tennis-tournament-in-rome-friday-may-1-2009-federer-won-7-6-3-6-2-ap-photoalessandra-tarantino-2P8H8E1.jpg)