Dominika Cibulkova of Slovakia serves to Maria Jose Martinez Sanchez of Spain during the French Open tennis tournament at the Roland Garros stadium in Paris June 1, 2012. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS)

Dominika Cibulkova of Slovakia returns the ball to Maria Jose Martinez Sanchez of Spain during the French Open tennis tournament at the Roland Garros stadium in Paris June 1, 2012. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS)

Dominika Cibulkova of Slovakia reacts after winning her match against Maria Jose Martinez Sanchez of Spain during the French Open tennis tournament at the Roland Garros stadium in Paris June 1, 2012. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS)

Dominika Cibulkova of Slovakia (L) reacts after winning her match against Maria Jose Martinez Sanchez of Spain during the French Open tennis tournament at the Roland Garros stadium in Paris June 1, 2012. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS)

Dominika Cibulkova of Slovakia reacts after winning her match against Maria Jose Martinez Sanchez of Spain during the French Open tennis tournament at the Roland Garros stadium in Paris June 1, 2012. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS)

Dominika Cibulkova of Slovakia reacts after winning her match against Maria Jose Martinez Sanchez of Spain during the French Open tennis tournament at the Roland Garros stadium in Paris June 1, 2012. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS)

Dominika Cibulkova of Slovakia reacts after winning her match against Maria Jose Martinez Sanchez of Spain during the French Open tennis tournament at the Roland Garros stadium in Paris June 1, 2012. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS)

Dominika Cibulkova of Slovakia reacts during her match against Maria Jose Martinez Sanchez of Spain during the French Open tennis tournament at the Roland Garros stadium in Paris June 1, 2012. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS)

Dominika Cibulkova of Slovakia returns the ball to Maria Jose Martinez Sanchez of Spain during the French Open tennis tournament at the Roland Garros stadium in Paris June 1, 2012. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS)

Lucie Safarova of the Czech Republic reacts during her match against Maria Jose Martinez Sanchez of Spain during the French Open tennis tournament at the Roland Garros stadium in Paris May 30, 2012. REUTERS/Francois Lenoir (FRANCE - Tags: SPORT TENNIS)

Lucie Safarova of the Czech Republic returns the ball to Maria Jose Martinez Sanchez of Spain during the French Open tennis tournament at the Roland Garros stadium in Paris May 30, 2012. REUTERS/Francois Lenoir (FRANCE - Tags: SPORT TENNIS)

Lucie Safarova of the Czech Republic returns the ball to Maria Jose Martinez Sanchez of Spain during the French Open tennis tournament at the Roland Garros stadium in Paris May 30, 2012. REUTERS/Francois Lenoir (FRANCE - Tags: SPORT TENNIS)

Maria Jose Martinez Sanchez of Spain returns the ball to Lucie Safarova of the Czech Republic during the French Open tennis tournament at the Roland Garros stadium in Paris May 30, 2012. REUTERS/Francois Lenoir (FRANCE - Tags: SPORT TENNIS)

Maria Jose Martinez Sanchez of Spain returns the ball to Lucie Safarova of the Czech Republic during the French Open tennis tournament at the Roland Garros stadium in Paris May 30, 2012. REUTERS/Francois Lenoir (FRANCE - Tags: SPORT TENNIS)

Maria Jose Martinez Sanchez of Spain returns the ball to Lucie Safarova of the Czech Republic during the French Open tennis tournament at the Roland Garros stadium in Paris May 30, 2012. REUTERS/Francois Lenoir (FRANCE - Tags: SPORT TENNIS)

Maria Jose Martinez Sanchez of Spain returns the ball to Eva Birnerova of the Czech Republic during the French Open tennis tournament at the Roland Garros stadium in Paris May 27, 2012. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS)

Eva Birnerova of the Czech Republic returns the ball to Maria Jose Martinez Sanchez of Spain during the French Open tennis tournament at the Roland Garros stadium in Paris May 27, 2012. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS)

Maria Jose Martinez Sanchez of Spain challenges a line call against Lourdes Dominguez Lino of Spain during their match at the Indian Wells WTA tennis tournament in Indian Wells, California, March 8, 2012. REUTERS/Danny Moloshok (UNITED STATES - Tags: SPORT TENNIS) 

Maria Jose Martinez Sanchez of Spain returns a shot against Lourdes Dominguez Lino of Spain during their match at the Indian Wells WTA tennis tournament in Indian Wells, California, March 8, 2012. REUTERS/Danny Moloshok (UNITED STATES - Tags: SPORT TENNIS) 

Maria Jose Martinez Sanchez of Spain returns a shot against Lourdes Dominguez Lino of Spain during their match at the Indian Wells WTA tennis tournament in Indian Wells, California, March 8, 2012. REUTERS/Danny Moloshok (UNITED STATES - Tags: SPORT TENNIS) 

Lourdes Dominguez Lino of Spain returns a shot against Maria Jose Martinez Sanchez of Spain during their match at the Indian Wells WTA tennis tournament in Indian Wells, California, March 8, 2012. REUTERS/Danny Moloshok (UNITED STATES - Tags: SPORT TENNIS) 

Lourdes Dominguez Lino of Spain returns a shot against Maria Jose Martinez Sanchez of Spain during their match at the Indian Wells WTA tennis tournament in Indian Wells, California, March 8, 2012. REUTERS/Danny Moloshok (UNITED STATES - Tags: SPORT TENNIS) 

Venus Williams of the U.S. celebrates defeating Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 24, 2011. REUTERS/Eddie Keogh (BRITAIN - Tags: SPORT TENNIS)

Venus Williams of the U.S. celebrates defeating Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 24, 2011. REUTERS/Eddie Keogh (BRITAIN - Tags: SPORT TENNIS)

Venus Williams of the U.S. hits a return to Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 24, 2011. REUTERS/Eddie Keogh (BRITAIN - Tags: SPORT TENNIS ENTERTAINMENT SOCIETY)

Venus Williams of the U.S. celebrates defeating Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 24, 2011. REUTERS/Eddie Keogh (BRITAIN - Tags: SPORT TENNIS)

Venus Williams of the U.S. celebrates defeating Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 24, 2011. REUTERS/Eddie Keogh (BRITAIN - Tags: SPORT TENNIS)

Venus Williams of the U.S. hits a return to Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 24, 2011. REUTERS/Eddie Keogh (BRITAIN - Tags: SPORT TENNIS ENTERTAINMENT SOCIETY)

Venus Williams of the U.S. serves to Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 24, 2011. REUTERS/Eddie Keogh (BRITAIN - Tags: SPORT TENNIS ENTERTAINMENT SOCIETY)

Venus Williams of the U.S. hits a return to Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 24, 2011. REUTERS/Eddie Keogh (BRITAIN - Tags: SPORT TENNIS ENTERTAINMENT SOCIETY)

Venus Williams of the U.S. hits a return to Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 24, 2011. REUTERS/Eddie Keogh (BRITAIN - Tags: SPORT TENNIS ENTERTAINMENT SOCIETY)

Venus Williams of the U.S. hits a return to Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 24, 2011. REUTERS/Eddie Keogh (BRITAIN - Tags: SPORT TENNIS ENTERTAINMENT SOCIETY)

Maria Jose Martinez Sanchez of Spain reacts during her match against Monica Niculescu of Romania at the Wimbledon tennis championships in London June 22, 2011. REUTERS/Stefan Wermuth (BRITAIN - Tags: SPORT TENNIS)

Maria Jose Martinez Sanchez of Spain reacts during her match against Monica Niculescu of Romania at the Wimbledon tennis championships in London June 22, 2011. REUTERS/Stefan Wermuth (BRITAIN - Tags: SPORT TENNIS)

Maria Jose Martinez Sanchez of Spain reacts during her match against Monica Niculescu of Romania at the Wimbledon tennis championships in London June 22, 2011. REUTERS/Stefan Wermuth (BRITAIN - Tags: SPORT TENNIS)

Jelena Jankovic of Serbia waves after being defeated by Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Jelena Jankovic of Serbia reacts during her match against Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Maria Jose Martinez Sanchez of Spain reacts after defeating Jelena Jankovic of Serbia at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Maria Jose Martinez Sanchez of Spain reacts after defeating Jelena Jankovic of Serbia at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Maria Jose Martinez Sanchez of Spain reacts after defeating Jelena Jankovic of Serbia at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Jelena Jankovic of Serbia reacts during her match against Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Maria Jose Martinez Sanchez of Spain reacts after defeating Jelena Jankovic of Serbia at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Maria Jose Martinez Sanchez of Spain reacts during her match against Jelena Jankovic of Serbia at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Maria Jose Martinez Sanchez of Spain reacts during her match against Jelena Jankovic of Serbia at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Jelena Jankovic of Serbia reacts during her match against Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Jelena Jankovic of Serbia reacts during her match against Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Jelena Jankovic of Serbia hits a return to Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Maria Jose Martinez Sanchez of Spain hits a return to Jelena Jankovic of Serbia at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Jelena Jankovic of Serbia reaches to hit a return to Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Jelena Jankovic of Serbia reacts during her match against Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Jelena Jankovic of Serbia reacts during her match against Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Maria Jose Martinez Sanchez of Spain serves to Jelena Jankovic of Serbia at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Maria Jose Martinez Sanchez of Spain reacts during her match against Jelena Jankovic of Serbia at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Jelena Jankovic of Serbia serves to Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Jelena Jankovic of Serbia serves to Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Jelena Jankovic of Serbia hits a return to Maria Jose Martinez Sanchez of Spain at the Wimbledon tennis championships in London June 21, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT TENNIS)

Maria Jose Martinez Sanchez of Spain returns the ball to Shahar Peer of Israel during the French Open tennis tournament at the Roland Garros stadium in Paris, May 22, 2011. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS)

Maria Jose Martinez Sanchez of Spain wipes her face during her match against Shahar Peer of Israel during the French Open tennis tournament at the Roland Garros stadium in Paris, May 22, 2011. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS)

Maria Jose Martinez Sanchez of Spain serves to Shahar Peer of Israel during the French Open tennis tournament at the Roland Garros stadium in Paris, May 22, 2011. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS)

Shahar Peer of Israel returns the ball to Maria Jose Martinez Sanchez of Spain during the French Open tennis tournament at the Roland Garros stadium in Paris, May 22, 2011. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT TENNIS)