![Meng Yuan from China returns to Patty Schnyder from Switzerland during first round on play at the Rogers Cup tennis tournament Monday, July 28, 2008 in Montreal. (AP Photo/The Canadian Press, Paul Meng Yuan from China returns to Patty Schnyder from Switzerland during first round on play at the Rogers Cup tennis tournament Monday, July 28, 2008 in Montreal. (AP Photo/The Canadian Press, Paul](https://c8.alamy.com/comp/2P9TXY3/meng-yuan-from-china-returns-to-patty-schnyder-from-switzerland-during-first-round-on-play-at-the-rogers-cup-tennis-tournament-monday-july-28-2008-in-montreal-ap-photothe-canadian-press-paul-chiasson-2P9TXY3.jpg)
Meng Yuan from China returns to Patty Schnyder from Switzerland during first round on play at the Rogers Cup tennis tournament Monday, July 28, 2008 in Montreal. (AP Photo/The Canadian Press, Paul
![Roger Federer from Switzerland hits the ball during his semifinal tennis match against Britain's Andy Murray Roger Federer from Switzerland hits the ball during his semifinal tennis match against Britain's Andy Murray](https://c8.alamy.com/comp/2P9HBJ6/roger-federer-from-switzerland-hits-the-ball-during-his-semifinal-tennis-match-against-britains-andy-murray-at-the-madrid-masters-in-madrid-on-saturday-oct-18-2008-murray-won-3-6-6-3-7-5-ap-photopaul-white-2P9HBJ6.jpg)
Roger Federer from Switzerland hits the ball during his semifinal tennis match against Britain's Andy Murray
![Stanislas Wawrinka from Switzerland, serves to Kevin Anderson of South Africa, at the Rogers Cup men's tennis tournament Thursday, Aug. 11, 2011 in Montreal. (AP Photo/The Canadian Press, Paul Chiasson Stock Photo - Stanislas Wawrinka from Switzerland, serves to Kevin Anderson of South Africa, at the Rogers Cup men's tennis tournament Thursday, Aug. 11, 2011 in Montreal. (AP Photo/The Canadian Press, Paul Chiasson Stock Photo -](https://c8.alamy.com/comp/2P73GYW/stanislas-wawrinka-from-switzerland-serves-to-kevin-anderson-of-south-africa-at-the-rogers-cup-mens-tennis-tournament-thursday-aug-11-2011-in-montreal-ap-photothe-canadian-press-paul-chiasson-2P73GYW.jpg)
Stanislas Wawrinka from Switzerland, serves to Kevin Anderson of South Africa, at the Rogers Cup men's tennis tournament Thursday, Aug. 11, 2011 in Montreal. (AP Photo/The Canadian Press, Paul Chiasson Stock Photo -
![Roger Federer, from Switzerland, returns a shot during his 6-3, 6-4 win over Paul-Henri Mathieu at the Rogers Cup tennis tournament action in Toronto, Tuesday Aug. 8, 2006. (AP PHOTO/CP, Adrian Wyld Roger Federer, from Switzerland, returns a shot during his 6-3, 6-4 win over Paul-Henri Mathieu at the Rogers Cup tennis tournament action in Toronto, Tuesday Aug. 8, 2006. (AP PHOTO/CP, Adrian Wyld](https://c8.alamy.com/comp/2PCNMKG/roger-federer-from-switzerland-returns-a-shot-during-his-6-3-6-4-win-over-paul-henri-mathieu-at-the-rogers-cup-tennis-tournament-action-in-toronto-tuesday-aug-8-2006-ap-photocp-adrian-wyld-2PCNMKG.jpg)
Roger Federer, from Switzerland, returns a shot during his 6-3, 6-4 win over Paul-Henri Mathieu at the Rogers Cup tennis tournament action in Toronto, Tuesday Aug. 8, 2006. (AP PHOTO/CP, Adrian Wyld
![Paul Henri Mathieu from France celebrates his victory after his semifinal match match against Radek Stepanek from the Czech Republic at the Swiss Open tennis tournament in Gstaad, Switzerland, Saturday, July 14, Paul Henri Mathieu from France celebrates his victory after his semifinal match match against Radek Stepanek from the Czech Republic at the Swiss Open tennis tournament in Gstaad, Switzerland, Saturday, July 14,](https://c8.alamy.com/comp/2PBB40N/paul-henri-mathieu-from-france-celebrates-his-victory-after-his-semifinal-match-match-against-radek-stepanek-from-the-czech-republic-at-the-swiss-open-tennis-tournament-in-gstaad-switzerland-saturday-july-14-2007-mathieu-won-in-two-sets-6-4-and-6-3-ap-photokeystone-peter-schneider-2PBB40N.jpg)
Paul Henri Mathieu from France celebrates his victory after his semifinal match match against Radek Stepanek from the Czech Republic at the Swiss Open tennis tournament in Gstaad, Switzerland, Saturday, July 14,
![Paul Henri Mathieu from France returns the ball during his semifinal match match against Radek Stepanek from the Czech Republic at the Swiss Open tennis tournament in Gstaad, Switzerland, Saturday, July 14, Paul Henri Mathieu from France returns the ball during his semifinal match match against Radek Stepanek from the Czech Republic at the Swiss Open tennis tournament in Gstaad, Switzerland, Saturday, July 14,](https://c8.alamy.com/comp/2PBB40B/paul-henri-mathieu-from-france-returns-the-ball-during-his-semifinal-match-match-against-radek-stepanek-from-the-czech-republic-at-the-swiss-open-tennis-tournament-in-gstaad-switzerland-saturday-july-14-2007-mathieu-won-in-two-sets-6-4-and-6-3-ap-photokeystone-peter-schneider-2PBB40B.jpg)
Paul Henri Mathieu from France returns the ball during his semifinal match match against Radek Stepanek from the Czech Republic at the Swiss Open tennis tournament in Gstaad, Switzerland, Saturday, July 14,
![Tommy Paul of the United States returns the ball to Stan Wawrinka of Switzerland during their singles tennis match at the Queen's Club Championships in London, Thursday, June 16, 2022. (AP Photo/Kirsty Tommy Paul of the United States returns the ball to Stan Wawrinka of Switzerland during their singles tennis match at the Queen's Club Championships in London, Thursday, June 16, 2022. (AP Photo/Kirsty](https://c8.alamy.com/comp/2MB8J52/tommy-paul-of-the-united-states-returns-the-ball-to-stan-wawrinka-of-switzerland-during-their-singles-tennis-match-at-the-queens-club-championships-in-london-thursday-june-16-2022-ap-photokirsty-wigglesworth-2MB8J52.jpg)
Tommy Paul of the United States returns the ball to Stan Wawrinka of Switzerland during their singles tennis match at the Queen's Club Championships in London, Thursday, June 16, 2022. (AP Photo/Kirsty
![Paul Capdeville of Chile returns a shot to Roger Federer of Switzerland at the US Open tennis tournament in New York, Wednesday, Aug. 29, 2007. (AP Photo/Darron Cummings Stock Photo - Alamy Paul Capdeville of Chile returns a shot to Roger Federer of Switzerland at the US Open tennis tournament in New York, Wednesday, Aug. 29, 2007. (AP Photo/Darron Cummings Stock Photo - Alamy](https://c8.alamy.com/comp/2PB6C4A/paul-capdeville-of-chile-returns-a-shot-to-roger-federer-of-switzerland-at-the-us-open-tennis-tournament-in-new-york-wednesday-aug-29-2007-ap-photodarron-cummings-2PB6C4A.jpg)
Paul Capdeville of Chile returns a shot to Roger Federer of Switzerland at the US Open tennis tournament in New York, Wednesday, Aug. 29, 2007. (AP Photo/Darron Cummings Stock Photo - Alamy
![Lleyton Hewitt of Australia, returns to top seeded Roger Federer of Switzerland, during the third round of the U.S. Open tennis tournament in New York, Saturday, Sept. 5, 2009. (AP Photo/Paul J. Lleyton Hewitt of Australia, returns to top seeded Roger Federer of Switzerland, during the third round of the U.S. Open tennis tournament in New York, Saturday, Sept. 5, 2009. (AP Photo/Paul J.](https://c8.alamy.com/comp/2P846FE/lleyton-hewitt-of-australia-returns-to-top-seeded-roger-federer-of-switzerland-during-the-third-round-of-the-us-open-tennis-tournament-in-new-york-saturday-sept-5-2009-ap-photopaul-j-bereswill-2P846FE.jpg)