Nadia Petrova of Russia hits a return to Jill Craybas of the United States at the Family Circle Cup tennis tournament in Charleston, South Carolina April 4, 2012. REUTERS/Mary Ann Chastain (UNITED STATES - Tags: SPORT TENNIS) 

Jill Craybas of United States hits a return to Nadia Petrova of Russia at the Family Circle Cup tennis tournament in Charleston, South Carolina April 4, 2012. REUTERS/Mary Ann Chastain (UNITED STATES - Tags: SPORT TENNIS) 

Nadia Petrova of Russia hits a return to Jill Craybas of the United States at the Family Circle Cup tennis tournament in Charleston, South Carolina April 4, 2012. REUTERS/Mary Ann Chastain (UNITED STATES - Tags: SPORT TENNIS) 

Ashleigh Barty of Australia (L) and Laura Robson of Britain talk during their women's doubles match against Dominika Cibulkova of Slovakia and Jill Craybas of the U.S. at the Australian Open tennis tournament in Melbourne January 18, 2012. REUTERS/Toby Melville (AUSTRALIA - Tags: SPORT TENNIS)

Laura Robson of Britain hits a return during her women's doubles match with Ashleigh Barty against Dominika Cibulkova of Slovakia and Jill Craybas of the U.S. at the Australian Open tennis tournament in Melbourne January 18, 2012. REUTERS/Toby Melville (AUSTRALIA - Tags: SPORT TENNIS)

Ashleigh Barty of Australia hits a return during her women's doubles match with Laura Robson of Britain against Dominika Cibulkova of Slovakia and Jill Craybas of the U.S. at the Australian Open tennis tournament in Melbourne January 18, 2012. REUTERS/Toby Melville (AUSTRALIA - Tags: SPORT TENNIS)

Ashleigh Barty of Australia (L) and Laura Robson of Britain talk in between serves during their women's doubles match against Dominika Cibulkova of Slovakia and Jill Craybas of the U.S. at the Australian Open tennis tournament in Melbourne January 18, 2012. REUTERS/Toby Melville (AUSTRALIA - Tags: SPORT TENNIS)

Svetlana Kuznetsova of Russia hits a return to Jill Craybas of the U.S. during their first round match at the Cincinnati Open tennis tournament in Cincinnati, Ohio August 15, 2011. REUTERS/John Sommers II (UNITED STATES - Tags: SPORT TENNIS) 

Svetlana Kuznetsova of Russia hits a return to Jill Craybas of the U.S. during their first round match at the Cincinnati Open tennis tournament in Cincinnati, Ohio August 15, 2011. REUTERS/John Sommers II (UNITED STATES - Tags: SPORT TENNIS) 

Svetlana Kuznetsova of Russia hits a return to Jill Craybas of the U.S. during their first round match at the Cincinnati Open tennis tournament in Cincinnati, Ohio August 15, 2011. REUTERS/John Sommers II (UNITED STATES - Tags: SPORT TENNIS) 

Jill Craybas of United States hits a returns to Svetlana Kuznetsova of Russia, during their first round match of the 2011 Cincinnati Open tennis tournament in Cincinnati, Ohio, August 15, 2011. REUTERS/John Sommers II (UNITED STATES - Tags: SPORT TENNIS) 

Vera Zvonareva of Russia celebrates after defeating Jill Craybas of the U.S. during second round play at the WTA tennis in event in Carlsbad, California August 2, 2011.
REUTERS/Mike Blake (UNITED STATES - Tags: SPORT TENNIS) 

Vera Zvonareva of Russia celebrates after defeating Jill Craybas of the U.S. during second round play at the WTA tennis in event in Carlsbad, California August 2, 2011.
REUTERS/Mike Blake (UNITED STATES - Tags: SPORT TENNIS) 

Jill Craybas of the U.S. hits a return to Vera Zvonareva of Russia during second round play at the WTA tennis in event in Carlsbad, California August 2, 2011.
REUTERS/Mike Blake (UNITED STATES - Tags: SPORT TENNIS) 

Vera Zvonareva of Russia hits a return to Jill Craybas of the U.S. during second round play at the WTA tennis tournament in Carlsbad, California August 2, 2011. REUTERS/Mike Blake (UNITED STATES - Tags: SPORT TENNIS) 

Vera Zvonareva of Russia returns a forehand to Jill Craybas of the U.S. during second round play at the WTA tennis tournament in Carlsbad, California August 2, 2011.
REUTERS/Mike Blake (UNITED STATES - Tags: SPORT TENNIS) 

Vera Zvonareva of Russia hits a return to Jill Craybas of the U.S. during second round play at the WTA tennis tournament in Carlsbad, California August 2, 2011.
REUTERS/Mike Blake (UNITED STATES - Tags: SPORT TENNIS) 

Vera Zvonareva of Russia returns serves to Jill Craybas of the U.S. during second round play at the WTA tennis tournament in Carlsbad, California August 2, 2011.
REUTERS/Mike Blake (UNITED STATES - Tags: SPORT TENNIS IMAGES OF THE DAY) 

Vera Zvonareva of Russia hits a returns a volley to Jill Craybas during second round play at the WTA tennis tournament in Carlsbad, California August 2, 2011.
REUTERS/Mike Blake (UNITED STATES - Tags: SPORT TENNIS) 

Andrea Petkovic of Germany celebrates her victory over Jill Craybas of the U.S. during their match at the Australian Open tennis tournament in Melbourne January 17, 2011. REUTERS/Yuriko Nakao (AUSTRALIA - Tags: SPORT TENNIS) 

Andrea Petkovic of Germany celebrates her victory over Jill Craybas of the U.S. during their match at the Australian Open tennis tournament in Melbourne January 17, 2011. REUTERS/Yuriko Nakao (AUSTRALIA - Tags: SPORT TENNIS) 

Andrea Petkovic of Germany serves to Jill Craybas of the U.S. during their match at the Australian Open tennis tournament in Melbourne January 17, 2011. REUTERS/Yuriko Nakao (AUSTRALIA - Tags: SPORT TENNIS) 

Jill Craybas of the U.S. hits a shot to Andrea Petkovic of Germany during their match at the Australian Open tennis tournament in Melbourne January 17, 2011. REUTERS/Yuriko Nakao (AUSTRALIA - Tags: SPORT TENNIS) 

Jill Craybas of the U.S. pumps her fist during her match against Katie O'Brien of Britain at the French Open tennis tournament at Roland Garros in Paris, May 25, 2010. REUTERS/Thierry Roge (FRANCE - Tags: SPORT TENNIS) 

Katie O'Brien of Britain reacts during her match against Jill Craybas of the U.S. at the French Open tennis tournament at Roland Garros in Paris, May 25, 2010. REUTERS/Thierry Roge (FRANCE - Tags: SPORT TENNIS) 

Katie O'Brien of Britain wipes her face during her match against Jill Craybas of the U.S. at the French Open tennis tournament at Roland Garros in Paris, May 25, 2010. REUTERS/Thierry Roge (FRANCE - Tags: SPORT TENNIS) 

Katie O'Brien of Britain plays a shot during her match against Jill Craybas of the U.S. at the French Open tennis tournament at Roland Garros in Paris, May 25, 2010. REUTERS/Thierry Roge (FRANCE - Tags: SPORT TENNIS) 

Jill Craybas of the U.S. plays a shot during her match against Katie O'Brien of Britain at the French Open tennis tournament at Roland Garros in Paris, May 25, 2010. REUTERS/Thierry Roge (FRANCE - Tags: SPORT TENNIS) 

Jill Craybas of the U.S. hits a return to Belgium's Justine Henin during their Sony Ericsson Open tennis tournament match in Key Biscayne, Florida March 24, 2010. REUTERS/Andrew Innerarity (UNITED STATES - Tags: SPORT TENNIS) 

Belgium's Justine Henin hits a return to Jill Craybas of the U.S. during their Sony Ericsson Open tennis tournament match in Key Biscayne, Florida March 24, 2010. REUTERS/Andrew Innerarity (UNITED STATES - Tags: SPORT TENNIS) 

Belgium's Justine Henin hits a return to Jill Craybas of the U.S. during their Sony Ericsson Open tennis tournament match in Key Biscayne, Florida March 24, 2010. REUTERS/Andrew Innerarity (UNITED STATES - Tags: SPORT TENNIS) 

Jill Craybas of the U.S. plays a shot during her match against Caroline Wozniacki of Denmark at the French Open tennis tournament at Roland Garros in Paris May 28, 2009. REUTERS/Benoit Tessier (FRANCE SPORT TENNIS) 

Caroline Wozniacki of Denmark plays a shot during her match against Jill Craybas of the U.S. at the French Open tennis tournament at Roland Garros in Paris May 28, 2009. REUTERS/Benoit Tessier (FRANCE SPORT TENNIS) 

Caroline Wozniacki of Denmark plays a shot during her match against Jill Craybas of the U.S. at the French Open tennis tournament at Roland Garros in Paris May 28, 2009. REUTERS/Benoit Tessier (FRANCE SPORT TENNIS) 

Jill Craybas of the U.S. leaves the court after being defeated by Russia's Dinara Safina during the Indian Wells WTA tennis tournament in Indian Wells, California, March 17, 2009. REUTERS/Michael Fiala (UNITED STATES SPORT TENNIS) 

Russia's Dinara Safina reacts after winning a point against Jill Craybas of the U.S. during the Indian Wells WTA tennis tournament in Indian Wells, California March 17, 2009. REUTERS/Michael Fiala (UNITED STATES SPORT TENNIS IMAGE OF THE DAY TOP PICTURE) 

Jill Craybas of the U.S. hits a return against Russia's Dinara Safina during the Indian Wells WTA tennis tournament in Indian Wells, California, March 17, 2009. REUTERS/Michael Fiala (UNITED STATES SPORT TENNIS) 

Russia's Dinara Safina hits a ball into the crowd after defeating Jill Craybas of the U.S. during the Indian Wells WTA tennis tournament in Indian Wells, California, March 17, 2009. REUTERS/Michael Fiala (UNITED STATES SPORT TENNIS) 

Jill Craybas of the U.S. serves to Russia's Dinara Safina during the Indian Wells WTA tennis tournament in Indian Wells, California March 17, 2009. REUTERS/Michael Fiala (UNITED STATES SPORT TENNIS) 

Russia's Dinara Safina watches a lob by her opponent Jill Craybas of the U.S. during the Indian Wells WTA tennis tournament in Indian Wells, California March 17, 2009. REUTERS/Michael Fiala (UNITED STATES SPORT TENNIS) 

Russia's Dinara Safina hits a return against Jill Craybas of the U.S. during the Indian Wells WTA tennis tournament in Indian Wells, California, March 17, 2009. REUTERS/Michael Fiala (UNITED STATES SPORT TENNIS) 

Jelena Dokic of Australia reacts while walking off the court following her loss to Jill Craybas of the U.S. during the Indian Wells WTA tennis tournament in Indian Wells, California, March 11, 2009. REUTERS/Michael Fiala (UNITED STATES SPORT TENNIS) 

Jelena Dokic of Australia hits a return against Jill Craybas of the U.S. during the Indian Wells WTA tennis tournament in Indian Wells, California, March 11, 2009. REUTERS/Michael Fiala (UNITED STATES SPORT TENNIS) 

Jelena Dokic of Australia reacts while walking off the court following her loss to Jill Craybas of the U.S. during the Indian Wells WTA tennis tournament in Indian Wells, California, March 11, 2009. REUTERS/Michael Fiala (UNITED STATES SPORT TENNIS) 

U.S. captain Mary Joe Fernandez (C) poses with Liezel Huber (L), Julie Ditty (2nd), Melanie Oudin (4th) and Jill Craybas after defeating Argentina 3-2 during the Fed Cup first round tennis match in Surprise, Arizona, February 8, 2009. REUTERS/Rick Scuteri (UNITED STATES) 

Argentina's Gisela Dulko hits a return against Jill Craybas of the U.S. during their Fed Cup tennis match in Surprise, Arizona February 8, 2009. REUTERS/Rick Scuteri (UNITED STATES) 

Argentina's Gisela Dulko hits a return against Jill Craybas of the U.S. during their Fed Cup tennis match in Surprise, Arizona February 8, 2009. REUTERS/Rick Scuteri (UNITED STATES) 

Jill Craybas of U.S. hits a return against Argentina's Gisela Dulko during their Fed Cup first round tennis match in Surprise, Arizona, February 8, 2009. Dulko defeated Craybas. REUTERS/Rick Scuteri (UNITED STATES) 

Jill Craybas of the U.S. hits a return against Argentina's Gisela Dulko during their Fed Cup tennis match in Surprise, Arizona February 8, 2009. REUTERS/Rick Scuteri (UNITED STATES) 

Argentina's Gisela Dulko serves to Jill Craybas of the U.S. during their Fed Cup tennis match in Surprise, Arizona February 8, 2009. REUTERS/Rick Scuteri (UNITED STATES) 

Argentina's Gisela Dulko hits a return against Jill Craybas of the U.S. during their Fed Cup tennis match in Surprise, Arizona February 8, 2009. REUTERS/Rick Scuteri (UNITED STATES) 

Argentina's Gisela Dulko reacts after defeating Jill Craybas of the U.S. during their Fed Cup tennis match in Surprise, Arizona February 8, 2009. REUTERS/Rick Scuteri (UNITED STATES) 

Argentina's Betina Jozami (L) talks with her coach Ricardo Rivera during her match against Jill Craybas of the U.S. during their Fed Cup first round tennis match in Surprise, Arizona February 7, 2009. REUTERS/Rick Scuteri (UNITED STATES) 

Jill Craybas of the U.S. reacts after defeating Argentina's Betina Jozami during their Fed Cup first round tennis match in Surprise, Arizona, February 7, 2009. REUTERS/Rick Scuteri (UNITED STATES) 

Jill Craybas of the U.S. hits a return against Argentina's Betina Jozami during their Fed Cup first round tennis match in Surprise, Arizona, February 7, 2009. REUTERS/Rick Scuteri (UNITED STATES) 

Jill Craybas of the U.S. reacts after serving an ace against Argentina's Betina Jozami during their Fed Cup first round tennis match in Surprise, Arizona, February 7, 2009. REUTERS/Rick Scuteri (UNITED STATES) 

Argentina's Betina Jozami hits a return against Jill Craybas of the U.S. during their Fed Cup first round tennis match in Surprise, Arizona, February 7, 2009. REUTERS/Rick Scuteri (UNITED STATES) 

Argentina's Betina Jozami reaches for the ball hit by Jill Craybas of the U.S. during their Fed Cup first round tennis match in Surprise, Arizona, February 7, 2009. REUTERS/Rick Scuteri (UNITED STATES) 

Argentina's Betina Jozami reacts after hitting it wide against Jill Craybas of the U.S. during their Fed Cup first round tennis match in Surprise, Arizona, February 7, 2009. REUTERS/Rick Scuteri (UNITED STATES) 

Argentina's Betina Jozami reaches for ball hit by Jill Craybas of the U.S. during their Fed Cup first round tennis match in Surprise, Arizona, February 7, 2009. REUTERS/Rick Scuteri (UNITED STATES)