![Stan Wawrinka of Switzerland returns a shot to Nicolas Mahut of France during their singles match at the Queens Club tennis tournament in London, Thursday, June 20, 2019. (AP Photo/Frank Augstein Stock Stan Wawrinka of Switzerland returns a shot to Nicolas Mahut of France during their singles match at the Queens Club tennis tournament in London, Thursday, June 20, 2019. (AP Photo/Frank Augstein Stock](https://c8.alamy.com/comp/2MJNBGM/stan-wawrinka-of-switzerland-returns-a-shot-to-nicolas-mahut-of-france-during-their-singles-match-at-the-queens-club-tennis-tournament-in-london-thursday-june-20-2019-ap-photofrank-augstein-2MJNBGM.jpg)
Stan Wawrinka of Switzerland returns a shot to Nicolas Mahut of France during their singles match at the Queens Club tennis tournament in London, Thursday, June 20, 2019. (AP Photo/Frank Augstein Stock
![Nicolas Mahut, of France, celebrates winning against Stan Wawrinka, of Switzerland, after their singles match at the Queens Club tennis tournament in London, Thursday, June 20, 2019.(AP Photo/Frank Augstein Stock Photo - Nicolas Mahut, of France, celebrates winning against Stan Wawrinka, of Switzerland, after their singles match at the Queens Club tennis tournament in London, Thursday, June 20, 2019.(AP Photo/Frank Augstein Stock Photo -](https://c8.alamy.com/comp/2MJNB83/nicolas-mahut-of-france-celebrates-winning-against-stan-wawrinka-of-switzerland-after-their-singles-match-at-the-queens-club-tennis-tournament-in-london-thursday-june-20-2019ap-photofrank-augstein-2MJNB83.jpg)
Nicolas Mahut, of France, celebrates winning against Stan Wawrinka, of Switzerland, after their singles match at the Queens Club tennis tournament in London, Thursday, June 20, 2019.(AP Photo/Frank Augstein Stock Photo -
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The Most Important Tournament Titles Missing from Roger Federer's Resume | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
![Nicolas Mahut, of France, celebrates winning against Stan Wawrinka, of Switzerland, after their singles match at the Queens Club tennis tournament in London, Thursday, June 20, 2019.(AP Photo/Frank Augstein Stock Photo - Nicolas Mahut, of France, celebrates winning against Stan Wawrinka, of Switzerland, after their singles match at the Queens Club tennis tournament in London, Thursday, June 20, 2019.(AP Photo/Frank Augstein Stock Photo -](https://c8.alamy.com/comp/2MJNB70/nicolas-mahut-of-france-celebrates-winning-against-stan-wawrinka-of-switzerland-after-their-singles-match-at-the-queens-club-tennis-tournament-in-london-thursday-june-20-2019ap-photofrank-augstein-2MJNB70.jpg)
Nicolas Mahut, of France, celebrates winning against Stan Wawrinka, of Switzerland, after their singles match at the Queens Club tennis tournament in London, Thursday, June 20, 2019.(AP Photo/Frank Augstein Stock Photo -
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![Stan Wawrinka of Switzerland, right, helps Dan Evans of Britain, left, after he slipped over during their singles match at the Queens Club tennis tournament in London, Wednesday, June 19, 2019. (AP Stan Wawrinka of Switzerland, right, helps Dan Evans of Britain, left, after he slipped over during their singles match at the Queens Club tennis tournament in London, Wednesday, June 19, 2019. (AP](https://c8.alamy.com/comp/2MJNFN3/stan-wawrinka-of-switzerland-right-helps-dan-evans-of-britain-left-after-he-slipped-over-during-their-singles-match-at-the-queens-club-tennis-tournament-in-london-wednesday-june-19-2019-ap-photokirsty-wigglesworth-2MJNFN3.jpg)
Stan Wawrinka of Switzerland, right, helps Dan Evans of Britain, left, after he slipped over during their singles match at the Queens Club tennis tournament in London, Wednesday, June 19, 2019. (AP
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![Roger Federer of Switzerland competes in the men's semifinals match on Day 13 of the 2010 US Open at the USTA Arthur Ashe Stadium in Flushing, Queens. Djokovic went on to beat Roger Federer of Switzerland competes in the men's semifinals match on Day 13 of the 2010 US Open at the USTA Arthur Ashe Stadium in Flushing, Queens. Djokovic went on to beat](https://c8.alamy.com/comp/CFPNK6/roger-federer-of-switzerland-competes-in-the-mens-semifinals-match-CFPNK6.jpg)