![Martina Hingis of Switzerland plays a shot to Belgium's Kim Clijsters in the French Open tennis tournament at Roland Garros in Paris, June 6, 2006. REUTERS/Regis Duvignau (FRANCE Stock Photo - Alamy Martina Hingis of Switzerland plays a shot to Belgium's Kim Clijsters in the French Open tennis tournament at Roland Garros in Paris, June 6, 2006. REUTERS/Regis Duvignau (FRANCE Stock Photo - Alamy](https://c8.alamy.com/comp/2E89FEG/martina-hingis-of-switzerland-plays-a-shot-to-belgiums-kim-clijsters-in-the-french-open-tennis-tournament-at-roland-garros-in-paris-june-6-2006-reutersregis-duvignau-france-2E89FEG.jpg)
Martina Hingis of Switzerland plays a shot to Belgium's Kim Clijsters in the French Open tennis tournament at Roland Garros in Paris, June 6, 2006. REUTERS/Regis Duvignau (FRANCE Stock Photo - Alamy
![Belgiens Kim Clijsters trifft eine Vorhand zu der Schweiz Martina Hingis während der 2006 Acura Classic Womens Tennis-Turniers in Carlsbad, Kalifornien 4. August 2006. REUTERS/Mike Blake (Vereinigte Staaten Stockfotografie - Alamy Belgiens Kim Clijsters trifft eine Vorhand zu der Schweiz Martina Hingis während der 2006 Acura Classic Womens Tennis-Turniers in Carlsbad, Kalifornien 4. August 2006. REUTERS/Mike Blake (Vereinigte Staaten Stockfotografie - Alamy](https://c8.alamy.com/compde/2e8h2ew/belgiens-kim-clijsters-trifft-eine-vorhand-zu-der-schweiz-martina-hingis-wahrend-der-2006-acura-classic-womens-tennis-turniers-in-carlsbad-kalifornien-4-august-2006-reutersmike-blake-vereinigte-staaten-2e8h2ew.jpg)
Belgiens Kim Clijsters trifft eine Vorhand zu der Schweiz Martina Hingis während der 2006 Acura Classic Womens Tennis-Turniers in Carlsbad, Kalifornien 4. August 2006. REUTERS/Mike Blake (Vereinigte Staaten Stockfotografie - Alamy
![Andy Roddick, Serena Williams, Roger Federer aus der Schweiz und Kim Clijsters aus Belgien während des Arthur Ashe Kindertages im USTA Billie Jean King National Tennis Center, 2012 US Open Championships in Andy Roddick, Serena Williams, Roger Federer aus der Schweiz und Kim Clijsters aus Belgien während des Arthur Ashe Kindertages im USTA Billie Jean King National Tennis Center, 2012 US Open Championships in](https://c8.alamy.com/compde/2e0kh02/andy-roddick-serena-williams-roger-federer-aus-der-schweiz-und-kim-clijsters-aus-belgien-wahrend-des-arthur-ashe-kindertages-im-usta-billie-jean-king-national-tennis-center-2012-us-open-championships-in-new-york-usa-am-25-august-2012-foto-von-corinne-dubreuilabacapresscom-2e0kh02.jpg)
Andy Roddick, Serena Williams, Roger Federer aus der Schweiz und Kim Clijsters aus Belgien während des Arthur Ashe Kindertages im USTA Billie Jean King National Tennis Center, 2012 US Open Championships in
![Swiss Martina Hingis reacts during her match against Belgian Kim Clijsters during the quarter-finals of the French ten… | Tenniskleid, Martina hingis, Tennisspieler Swiss Martina Hingis reacts during her match against Belgian Kim Clijsters during the quarter-finals of the French ten… | Tenniskleid, Martina hingis, Tennisspieler](https://i.pinimg.com/originals/70/21/2d/70212d2d68cd96277cc84a0c3ac8d1cf.jpg)
Swiss Martina Hingis reacts during her match against Belgian Kim Clijsters during the quarter-finals of the French ten… | Tenniskleid, Martina hingis, Tennisspieler
![Kim Clijsters of Belgium in action during her match against Patty Schnyder of Switzerland Stock Photo - Alamy Kim Clijsters of Belgium in action during her match against Patty Schnyder of Switzerland Stock Photo - Alamy](https://c8.alamy.com/comp/GBBMC6/kim-clijsters-of-belgium-in-action-during-her-match-against-patty-GBBMC6.jpg)
Kim Clijsters of Belgium in action during her match against Patty Schnyder of Switzerland Stock Photo - Alamy
![Martina Hingis of Switzerland is kissed by Kim Clijsters of Belgium after their match at the Australian Open tennis tournament in Melbourne January 25, 2006. REUTERS/David Gray Stock Photo - Alamy Martina Hingis of Switzerland is kissed by Kim Clijsters of Belgium after their match at the Australian Open tennis tournament in Melbourne January 25, 2006. REUTERS/David Gray Stock Photo - Alamy](https://c8.alamy.com/comp/2E7KJAD/martina-hingis-of-switzerland-is-kissed-by-kim-clijsters-of-belgium-after-their-match-at-the-australian-open-tennis-tournament-in-melbourne-january-25-2006-reutersdavid-gray-2E7KJAD.jpg)
Martina Hingis of Switzerland is kissed by Kim Clijsters of Belgium after their match at the Australian Open tennis tournament in Melbourne January 25, 2006. REUTERS/David Gray Stock Photo - Alamy
![Kim Clijsters of Belgium returns the ball to Martina Hingis of Switzerland March 27 in their fourth round match at the Ericsson Open. Clijsters lost to top seed Hingis 6-0 6-4. CB/SV Kim Clijsters of Belgium returns the ball to Martina Hingis of Switzerland March 27 in their fourth round match at the Ericsson Open. Clijsters lost to top seed Hingis 6-0 6-4. CB/SV](https://c8.alamy.com/comp/2D5E5M8/kim-clijsters-of-belgium-returns-the-ball-to-martina-hingis-of-switzerland-march-27-in-their-fourth-round-match-at-the-ericsson-open-clijsters-lost-to-top-seed-hingis-6-0-6-4-cbsv-2D5E5M8.jpg)