![Andrea Hlavackova of Czech Republic reacts after losing a point to Serena Williams on day 8 in Arthur Ashe Stadium at the Billie Jean King National Tennis Center in New York City Andrea Hlavackova of Czech Republic reacts after losing a point to Serena Williams on day 8 in Arthur Ashe Stadium at the Billie Jean King National Tennis Center in New York City](https://c8.alamy.com/comp/TYN6AJ/andrea-hlavackova-of-czech-republic-reacts-after-losing-a-point-to-serena-williams-on-day-8-in-arthur-ashe-stadium-at-the-billie-jean-king-national-tennis-center-in-new-york-city-on-september-3-2012-williams-defeated-hlavackova-6-6-0-upijohn-angelillo-TYN6AJ.jpg)
Andrea Hlavackova of Czech Republic reacts after losing a point to Serena Williams on day 8 in Arthur Ashe Stadium at the Billie Jean King National Tennis Center in New York City
![Angelique Kerber of Germany reacts after match point in her second round match against Venus Williams at the 2012 U.S. Open Tennis Championships in Arthur Ashe Stadium at the Billie Jean King Angelique Kerber of Germany reacts after match point in her second round match against Venus Williams at the 2012 U.S. Open Tennis Championships in Arthur Ashe Stadium at the Billie Jean King](https://c8.alamy.com/comp/TYN5RJ/angelique-kerber-of-germany-reacts-after-match-point-in-her-second-round-match-against-venus-williams-at-the-2012-us-open-tennis-championships-in-arthur-ashe-stadium-at-the-billie-jean-king-national-tennis-center-in-new-york-city-on-august-30-2012-kerber-defeated-williams-6-2-5-7-7-5-upijohn-angelillo-TYN5RJ.jpg)
Angelique Kerber of Germany reacts after match point in her second round match against Venus Williams at the 2012 U.S. Open Tennis Championships in Arthur Ashe Stadium at the Billie Jean King
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![Francesca Schiavone of Italy reacts after winning a point against Galina Voskoboeva of Kazakhstan during their match at the Brisbane International tennis tournament January 3, 2012. REUTERS/Daniel Munoz (AUSTRALIA - Tags: SPORT Francesca Schiavone of Italy reacts after winning a point against Galina Voskoboeva of Kazakhstan during their match at the Brisbane International tennis tournament January 3, 2012. REUTERS/Daniel Munoz (AUSTRALIA - Tags: SPORT](https://c8.alamy.com/comp/2D0N25N/francesca-schiavone-of-italy-reacts-after-winning-a-point-against-galina-voskoboeva-of-kazakhstan-during-their-match-at-the-brisbane-international-tennis-tournament-january-3-2012-reutersdaniel-munoz-australia-tags-sport-tennis-tpx-images-of-the-day-2D0N25N.jpg)
Francesca Schiavone of Italy reacts after winning a point against Galina Voskoboeva of Kazakhstan during their match at the Brisbane International tennis tournament January 3, 2012. REUTERS/Daniel Munoz (AUSTRALIA - Tags: SPORT
![Samantha Stosur of Australia reacts after winning a point in her victory against Marion Bartoli of France during their women's singles semi-final match at the Qatar Open tennis tournament in Doha February Samantha Stosur of Australia reacts after winning a point in her victory against Marion Bartoli of France during their women's singles semi-final match at the Qatar Open tennis tournament in Doha February](https://c8.alamy.com/comp/2CYX45J/samantha-stosur-of-australia-reacts-after-winning-a-point-in-her-victory-against-marion-bartoli-of-france-during-their-womens-singles-semi-final-match-at-the-qatar-open-tennis-tournament-in-doha-february-18-2012-bartoli-pulled-out-of-the-semifinal-when-she-was-trailing-6-3-0-0-reutersfadi-al-assaad-qatar-tags-sport-tennis-2CYX45J.jpg)
Samantha Stosur of Australia reacts after winning a point in her victory against Marion Bartoli of France during their women's singles semi-final match at the Qatar Open tennis tournament in Doha February
![Kaia Kanepi of Estonia reacts after her match point on the final of the Estoril Tennis Open beating Carla Suarez Navarro of Spain in Jamor May 5, 2012. REUTERS/Hugo Correia (PORTUGAL - Kaia Kanepi of Estonia reacts after her match point on the final of the Estoril Tennis Open beating Carla Suarez Navarro of Spain in Jamor May 5, 2012. REUTERS/Hugo Correia (PORTUGAL -](https://c8.alamy.com/comp/2E5X05J/kaia-kanepi-of-estonia-reacts-after-her-match-point-on-the-final-of-the-estoril-tennis-open-beating-carla-suarez-navarro-of-spain-in-jamor-may-5-2012-reutershugo-correia-portugal-tags-sport-tennis-2E5X05J.jpg)
Kaia Kanepi of Estonia reacts after her match point on the final of the Estoril Tennis Open beating Carla Suarez Navarro of Spain in Jamor May 5, 2012. REUTERS/Hugo Correia (PORTUGAL -
![British professional tennis player Johanna Konta (Jo Konta) pumps her fist after winning a point during a singles match. Konta is wearing Asics branded tenniswear and is sponsored by Nature Valley. At British professional tennis player Johanna Konta (Jo Konta) pumps her fist after winning a point during a singles match. Konta is wearing Asics branded tenniswear and is sponsored by Nature Valley. At](https://c8.alamy.com/comp/PKW9BD/british-professional-tennis-player-johanna-konta-jo-konta-pumps-her-fist-after-winning-a-point-during-a-singles-match-konta-is-wearing-asics-branded-tenniswear-and-is-sponsored-by-nature-valley-at-the-time-of-the-photograph-konta-was-the-british-1-woman-in-the-wta-rankings-having-recently-reached-4-in-the-world-konta-was-born-in-1991-in-australia-and-switched-her-allegiance-to-the-united-kingdom-in-2012-PKW9BD.jpg)
British professional tennis player Johanna Konta (Jo Konta) pumps her fist after winning a point during a singles match. Konta is wearing Asics branded tenniswear and is sponsored by Nature Valley. At
![Li Na, from China, celebrates a point against Canada's Eugenie Bouchard during their match at the Rogers Cup women's tennis tournament, Thursday, Aug. 9, 2012, in Montreal. (AP Photo/The Canadian Press, Paul Li Na, from China, celebrates a point against Canada's Eugenie Bouchard during their match at the Rogers Cup women's tennis tournament, Thursday, Aug. 9, 2012, in Montreal. (AP Photo/The Canadian Press, Paul](https://c8.alamy.com/comp/2HR4XB9/li-na-from-china-celebrates-a-point-against-canadas-eugenie-bouchard-during-their-match-at-the-rogers-cup-womens-tennis-tournament-thursday-aug-9-2012-in-montreal-ap-photothe-canadian-press-paul-chiasson-2HR4XB9.jpg)