![Marco Chiudinelli (L) and Stanislas Wawrinka of Switzerland talk during their Davis Cup world group play-off tennis match against Simone Bolelli and Potito Starace of Italy in Genoa September 19, 2009. REUTERS/Giampiero Marco Chiudinelli (L) and Stanislas Wawrinka of Switzerland talk during their Davis Cup world group play-off tennis match against Simone Bolelli and Potito Starace of Italy in Genoa September 19, 2009. REUTERS/Giampiero](https://c8.alamy.com/comp/2E7FW90/marco-chiudinelli-l-and-stanislas-wawrinka-of-switzerland-talk-during-their-davis-cup-world-group-play-off-tennis-match-against-simone-bolelli-and-potito-starace-of-italy-in-genoa-september-19-2009-reutersgiampiero-sposito-italy-sport-tennis-2E7FW90.jpg)
Marco Chiudinelli (L) and Stanislas Wawrinka of Switzerland talk during their Davis Cup world group play-off tennis match against Simone Bolelli and Potito Starace of Italy in Genoa September 19, 2009. REUTERS/Giampiero
![Martina Hingis (L) of Switzerland and Anna Kournikova of Russia talk strategy du... - #Anna #Hingis #Kournikova #Marti… | Martina hingis, Tennis stars, Monica seles Martina Hingis (L) of Switzerland and Anna Kournikova of Russia talk strategy du... - #Anna #Hingis #Kournikova #Marti… | Martina hingis, Tennis stars, Monica seles](https://i.pinimg.com/736x/cd/1a/5e/cd1a5e065d9dce724c3c4480157de7e0.jpg)
Martina Hingis (L) of Switzerland and Anna Kournikova of Russia talk strategy du... - #Anna #Hingis #Kournikova #Marti… | Martina hingis, Tennis stars, Monica seles
![Rafael Nadal (L) of Spain, and Roger Federer of Switzerland talk during a ground-breaking ceremony for the expansion of the Indian Wells Tennis Garden at the BNP Paribas Open ATP and WTA Rafael Nadal (L) of Spain, and Roger Federer of Switzerland talk during a ground-breaking ceremony for the expansion of the Indian Wells Tennis Garden at the BNP Paribas Open ATP and WTA](https://c8.alamy.com/comp/2D04EY4/rafael-nadal-l-of-spain-and-roger-federer-of-switzerland-talk-during-a-ground-breaking-ceremony-for-the-expansion-of-the-indian-wells-tennis-garden-at-the-bnp-paribas-open-atp-and-wta-tennis-tournament-in-indian-wells-california-march-8-2013-reutersdanny-moloshok-united-states-tags-sport-tennis-business-2D04EY4.jpg)
Rafael Nadal (L) of Spain, and Roger Federer of Switzerland talk during a ground-breaking ceremony for the expansion of the Indian Wells Tennis Garden at the BNP Paribas Open ATP and WTA
![Martina Hingis (L) and Belinda Bencic of Switzerland talk during their match against Andrea Petkovic..., Stock Photo, Picture And Rights Managed Image. Pic. PAH-65672122 | agefotostock Martina Hingis (L) and Belinda Bencic of Switzerland talk during their match against Andrea Petkovic..., Stock Photo, Picture And Rights Managed Image. Pic. PAH-65672122 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/279aee0967cdd7c16fb0f00662d12b0c/pah-65672122.jpg)
Martina Hingis (L) and Belinda Bencic of Switzerland talk during their match against Andrea Petkovic..., Stock Photo, Picture And Rights Managed Image. Pic. PAH-65672122 | agefotostock
![Anna Kournikova (R) of Russia and playing partner Martina Hingis of Switzerland talk during an exhibition match against Pat Cash of Australia and Mats Wilander of Sweden at the U.S. Open tennis Anna Kournikova (R) of Russia and playing partner Martina Hingis of Switzerland talk during an exhibition match against Pat Cash of Australia and Mats Wilander of Sweden at the U.S. Open tennis](https://c8.alamy.com/comp/2CYJWT3/anna-kournikova-r-of-russia-and-playing-partner-martina-hingis-of-switzerland-talk-during-an-exhibition-match-against-pat-cash-of-australia-and-mats-wilander-of-sweden-at-the-us-open-tennis-tournament-in-new-york-september-9-2010-reuterskevin-lamarque-united-states-tags-sport-tennis-2CYJWT3.jpg)
Anna Kournikova (R) of Russia and playing partner Martina Hingis of Switzerland talk during an exhibition match against Pat Cash of Australia and Mats Wilander of Sweden at the U.S. Open tennis
![Switzerland's Roger Federer returns a shot to Finland's Jarkko Nieminen during their final match at the Swiss Indoors ATP tennis tournament in Basel, October 28, 2007. REUTERS/Vincent Kessler (SWITZERLAND Stock Photo - Alamy Switzerland's Roger Federer returns a shot to Finland's Jarkko Nieminen during their final match at the Swiss Indoors ATP tennis tournament in Basel, October 28, 2007. REUTERS/Vincent Kessler (SWITZERLAND Stock Photo - Alamy](https://c8.alamy.com/comp/2E7E516/switzerlands-roger-federer-returns-a-shot-to-finlands-jarkko-nieminen-during-their-final-match-at-the-swiss-indoors-atp-tennis-tournament-in-basel-october-28-2007-reutersvincent-kessler-switzerland-2E7E516.jpg)
Switzerland's Roger Federer returns a shot to Finland's Jarkko Nieminen during their final match at the Swiss Indoors ATP tennis tournament in Basel, October 28, 2007. REUTERS/Vincent Kessler (SWITZERLAND Stock Photo - Alamy
![Roger Federer of Switzerland serving in the semifinal match against Ivo Karlovic of Croatia in the..., Stock Photo, Picture And Rights Managed Image. Pic. PAH-59353654 | agefotostock Roger Federer of Switzerland serving in the semifinal match against Ivo Karlovic of Croatia in the..., Stock Photo, Picture And Rights Managed Image. Pic. PAH-59353654 | agefotostock](https://t1.thpservices.com/previewimage/gallil/c28906a454eb82c43843b72b43dfa7c5/pah-59349611.jpg)