Belgium's Kim Clijsters hits a return to Croatia's Karolina Sprem at the 2010 Wimbledon tennis championships in London, June 23, 2010. REUTERS/Stefan Wermuth (BRITAIN - Tags: SPORT TENNIS)

Belgium's Kim Clijsters (R) kisses Croatia's Karolina Sprem after defeating her at the 2010 Wimbledon tennis championships in London, June 23, 2010. REUTERS/Stefan Wermuth (BRITAIN - Tags: SPORT TENNIS)

Belgium's Kim Clijsters celebrates defeating Croatia's Karolina Sprem at the 2010 Wimbledon tennis championships in London, June 23, 2010. REUTERS/Stefan Wermuth (BRITAIN - Tags: SPORT TENNIS)

Belgium's Kim Clijsters celebrates defeating Croatia's Karolina Sprem at the 2010 Wimbledon tennis championships in London, June 23, 2010. REUTERS/Stefan Wermuth (BRITAIN - Tags: SPORT TENNIS)

Croatia's Karolina Sprem walks to the baseline with a towel over her head during her match against Belgium's Kim Clijsters at the 2010 Wimbledon tennis championships in London, June 23, 2010. REUTERS/Stefan Wermuth (BRITAIN - Tags: SPORT TENNIS)

Croatia's Karolina Sprem reacts in her match against Belgium's Kim Clijsters at the 2010 Wimbledon tennis championships in London, June 23, 2010. REUTERS/Stefan Wermuth (BRITAIN - Tags: SPORT TENNIS)

Croatia's Karolina Sprem hits a return to Belgium's Kim Clijsters at the 2010 Wimbledon tennis championships in London, June 23, 2010. REUTERS/Stefan Wermuth (BRITAIN - Tags: SPORT TENNIS)

Belgium's Kim Clijsters hits a return to Croatia's Karolina Sprem at the 2010 Wimbledon tennis championships in London, June 23, 2010. REUTERS/Stefan Wermuth (BRITAIN - Tags: SPORT TENNIS)

Belgium's Kim Clijsters hits a return to Croatia's Karolina Sprem at the 2010 Wimbledon tennis championships in London, June 23, 2010. REUTERS/Stefan Wermuth (BRITAIN - Tags: SPORT TENNIS)

Belgium's Kim Clijsters hits a return to Croatia's Karolina Sprem at the 2010 Wimbledon tennis championships in London, June 23, 2010. REUTERS/Stefan Wermuth (BRITAIN - Tags: SPORT TENNIS)

Croatia's Karolina Sprem hits a return to Belgium's Kim Clijsters at the 2010 Wimbledon tennis championships in London, June 23, 2010. REUTERS/Stefan Wermuth (BRITAIN - Tags: SPORT TENNIS)

Croatia's Karolina Sprem slips reaching for a return to Belgium's Kim Clijsters at the 2010 Wimbledon tennis championships in London, June 23, 2010. REUTERS/Stefan Wermuth (BRITAIN - Tags: SPORT TENNIS) 

Croatia's Karolina Sprem slips reaching for a return to Belgium's Kim Clijsters at the 2010 Wimbledon tennis championships in London, June 23, 2010. REUTERS/Stefan Wermuth (BRITAIN - Tags: SPORT TENNIS)

Karolina Sprem of Croatia hits a return to Bethanie Mattek-Sands of the U.S. at the 2010 Wimbledon Tennis Championships in London June 21, 2010. REUTERS/Phil Noble (BRITAIN - Tags: SPORT TENNIS) 

Maria Kirilenko of Russia plays a a shot during her match against Karolina Sprem of Croatia at the French Open tennis tournament at Roland Garros in Paris, May 23, 2010. REUTERS/Benoit Tessier (FRANCE - Tags: SPORT TENNIS) 

Maria Kirilenko of Russia celebrates defeating Karolina Sprem of Croatia at the French Open tennis tournament at Roland Garros in Paris, May 23, 2010. REUTERS/Benoit Tessier (FRANCE - Tags: SPORT TENNIS) 

Karolina Sprem of Croatia reacts during her match against Maria Kirilenko of Russia at the French Open tennis tournament at Roland Garros in Paris, May 23, 2010. REUTERS/Benoit Tessier (FRANCE - Tags: SPORT TENNIS) 

Karolina Sprem of Croatia reacts during her match against Maria Kirilenko of Russia at the French Open tennis tournament at Roland Garros in Paris, May 23, 2010. REUTERS/Benoit Tessier (FRANCE - Tags: SPORT TENNIS) 

Israel's Shahar Peer speaks with her coach Pablo Giacopelli during her Paris Open tennis tournament match against Karolina Sprem of Croatia at the Coubertin stadium in Paris, February 11, 2010. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS) 

Israel's Shahar Peer serves to Karolina Sprem of Croatia during their Paris Open tennis tournament match at the Coubertin stadium in Paris February 11, 2010. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS) 

Israel's Shahar Peer returns a forehand to Karolina Sprem of Croatia during their Paris Open tennis tournament match at the Coubertin stadium in Paris February 11, 2010. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS) 

Israel's Shahar Peer celebrates during her Paris Open tennis tournament match against Karolina Sprem of Croati at the Coubertin stadium in Paris February 11, 2010. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS) 

Karolina Sprem of Croatia returns a backhand to Israel's Shahar Peer during their Paris Open tennis tournament match at the Coubertin stadium in Paris, February 11, 2010. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS) 

Israel's Shahar Peer serves to Karolina Sprem of Croatia during their Paris Open tennis tournament match at the Coubertin stadium in Paris, February 11, 2010. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS) 

Karolina Sprem of Croatia returns a shot against Australia's Casey Dellacqua at the Australian Open tennis tournament in Melbourne January 21, 2010. REUTERS/David Gray (AUSTRALIA - Tags: SPORT TENNIS) 

Karolina Sprem of Croatia returns a shot against Australia's Casey Dellacqua at the Australian Open tennis tournament in Melbourne January 21, 2010. REUTERS/David Gray (AUSTRALIA - Tags: SPORT TENNIS) 

Croatia's Karolina Sprem reacts during her match against Anabel Medina Garrigues of Spain during the Australian Open tennis tournament in Melbourne January 19, 2010. REUTERS/Tim Wimborne (AUSTRALIA - Tags: SPORT TENNIS) 

Anabel Medina Garrigues of Spain hits a return against Croatia's Karolina Sprem during the Australian Open tennis tournament in Melbourne January 19, 2010. REUTERS/Tim Wimborne (AUSTRALIA - Tags: SPORT TENNIS) 

Croatia's Karolina Sprem reacts during her match against Anabel Medina Garrigues of Spain during the Australian Open tennis tournament in Melbourne January 19, 2010. REUTERS/Tim Wimborne (AUSTRALIA - Tags: SPORT TENNIS) 

Croatia's Karolina Sprem hits a return against Anabel Medina Garrigues of Spain during the Australian Open tennis tournament in Melbourne January 19, 2010. REUTERS/Tim Wimborne (AUSTRALIA - Tags: SPORT TENNIS) 

Jelena Dokic of Australia leaves the court after winning her match against Karolina Sprem of Croatia during the French Open tennis tournament at Roland Garros in Paris May 26, 2009. REUTERS/Andrew Winning (FRANCE SPORT TENNIS) 

Jelena Dokic of Australia returns the ball to Karolina Sprem of Croatia during the French Open tennis tournament at Roland Garros in Paris May 26, 2009. REUTERS/Andrew Winning (FRANCE SPORT TENNIS) 

Jelena Dokic of Australia returns the ball to Karolina Sprem of Croatia during the French Open tennis tournament at Roland Garros in Paris May 26, 2009. REUTERS/Andrew Winning (FRANCE SPORT TENNIS) 

Jelena Dokic of Australia celebrates after winning against Karolina Sprem of Croatia during the French Open tennis tournament at Roland Garros in Paris May 26, 2009. REUTERS/Andrew Winning (FRANCE SPORT TENNIS) 

Casey Dellacqua of Australia returns a shot to Karolina Sprem of Croatia during their match at the Kolkata Open tennis tournament in Kolkata September 19, 2006. REUTERS/Jayanta Shaw (INDIA) 

Casey Dellacqua of Australia returns a shot to Karolina Sprem of Croatia during their match at the Kolkata Open tennis tournament in Kolkata September 19, 2006. REUTERS/Jayanta Shaw (INDIA) 

Karolina Sprem of Croatia serves to Casey Dellacqua of Australia during their match at the Kolkata Open tennis tournament in Kolkata September 19, 2006. REUTERS/Jayanta Shaw (INDIA) 

Karolina Sprem of Croatia returns a shot to Casey Dellacqua of Australia during their match at the Kolkata Open tennis tournament in Kolkata September 19, 2006. REUTERS/Jayanta Shaw (INDIA) 

Karolina Sprem of Croatia returns a shot to Casey Dellacqua of Australia during their match at the Kolkata Open tennis tournament in the eastern city of Kolkata September 19, 2006. REUTERS/Jayanta Shaw (INDIA) 

Sania Mirza of India celebrates her win over Karolina Sprem of Croatia during their match at the U.S. Open tennis tournament in New York, August 28, 2006. REUTERS/Eduardo Munoz (UNITED STATES) 

Sania Mirza of India serves to Karolina Sprem of Croatia during their match at the U.S. Open tennis tournament in New York, August 28, 2006. REUTERS/Eduardo Munoz (UNITED STATES) 

Sania Mirza of India returns a shot to Karolina Sprem of Croatia during their match at the U.S. Open tennis tournament in New York, August 28, 2006. REUTERS/Eduardo Munoz (UNITED STATES) 

Croatia's Karolina Sprem returns the ball to Russia's Elena Dementieva during the Fed Cup play-off tennis match between Russia and Croatia in Umag, Croatia, July 16, 2006. REUTERS/Matko Biljak (CROATIA) 

Croatia's Karolina Sprem returns the ball to Russia's Elena Dementieva during their Fed Cup play-off tennis match between Russia and Croatia in Umag, Croatia, July 16, 2006. REUTERS/Matko Biljak (CROATIA) 

Russia's Elena Dementieva celebrates after defeating Croatia's Karolina Sprem in their Fed Cup play-off tennis match in Umag, Croatia, July 16, 2006. REUTERS/Matko Biljak (CROATIA) 

Russia's Elena Dementieva returns the ball to Croatia's Karolina Sprem during the Fed Cup play-off tennis match between Russia and Croatia in Umag, Croatia, July 16, 2006. REUTERS/Matko Biljak (CROATIA) 

Russia's Elena Dementieva returns the ball to Croatia's Karolina Sprem during the Fed Cup play-off tennis match between Russia and Croatia in Umag, Croatia, July 16, 2006. REUTERS/Matko Biljak (CROATIA) 

Czech Republic's Nicole Vaidisova plays a shot to Croatia's Karolina Sprem during their match at the Wimbledon tennis championships in London June 30, 2006. REUTERS/Kevin Lamarque (BRITAIN) 

Czech Republic's Nicole Vaidisova celebrates her match against Croatia's Karolina Sprem at the Wimbledon tennis championships in London June 30, 2006. REUTERS/Alessia Pierdomenico (BRITAIN) 

Croatia's Karolina Sprem grimaces during her match against the Czech Republic's Nicole Vaidisova at the Wimbledon tennis championships in London June 30, 2006. REUTERS/Alessia Pierdomenico (BRITAIN) 

Croatia's Karolina Sprem plays a shot to Czech Republic's Nicole Vaidisova during their match at the Wimbledon tennis championships in London June 30, 2006. REUTERS/Alessia Pierdomenico (BRITAIN) 

Czech Republic's Nicole Vaidisova celebrates winning the first set in her match with Croatia's Karolina Sprem at the Wimbledon tennis championships in London June 30, 2006. REUTERS/Alessia Pierdomenico (BRITAIN) 

Croatia's Karolina Sprem wears a Winnie-the-Pooh teddy bear in her hair during her match against the Czech Republic's Nicole Vaidisova at the Wimbledon tennis championships in London June 30, 2006. REUTERS/Alessia Pierdomenico (BRITAIN) 

Czech Republic's Nicole Vaidisova plays a shot to Croatia's Karolina Sprem during their match at the Wimbledon tennis championships in London June 30, 2006. REUTERS/Alessia Pierdomenico (BRITAIN) 

Venus Williams of the U.S. shakes hand with the referee after her match against [Croatia's Karolina Sprem] during the French Open tennis tournament at Roland Garros in Paris June 2, 2006. 

Venus Williams of the U.S. celebrates winning his match against Croatia's Karolina Sprem during the French Open tennis tournament at Roland Garros in Paris, June 2, 2006. REUTERS/Regis Duvignau (FRANCE) 

Venus Williams of the U.S. serves to Croatia's Karolina Sprem during the French Open tennis tournament at Roland Garros in Paris, June 2, 2006. REUTERS/Regis Duvignau (FRANCE) 

Venus Williams of the U.S. shakes hand with the referee after her match against Croatia's Karolina Sprem during the French Open tennis tournament at Roland Garros in Paris June 2, 2006. REUTERS/Regis Duvignau (FRANCE) 

Venus Williams of the U.S. Is seen during her match against Croatia's Karolina Sprem in the French Open tennis tournament at Roland Garros in Paris, June 2, 2006. REUTERS/Regis Duvignau (FRANCE) 

Venus Williams of the U.S. wipes her face during her match against Croatia's Karolina Sprem during the French Open tennis tournament at Roland Garros in Paris June 2, 2006. REUTERS/Regis Duvignau (FRANCE)