The Globe and Mail

Caroline Wozniacki of Denmark celebrates after beating Maria Sharapova of Russia 6-3, 6-4 in the fourth round of play at the U.S. Open tennis tournament in New York, Monday, Sept. 6, 2010.

Maria Sharapova of Russia returns a shot against Caroline Wozniacki of Denmark during the women's singles match on day eight of the 2010 U.S. Open at the USTA Billie Jean King National Tennis Center on September 6, 2010 in the Flushing neighborhood of the Queens borough of New York City.

Maria Sharapova of Russia (L) and Caroline Wozniacki of Denmark (R) shake hands at the net after the women's singles match on day eight of the 2010 U.S. Open at the USTA Billie Jean King National Tennis Center on September 6, 2010 in the Flushing neighborhood of the Queens borough of New York City. Wozniacki defeated Sharapova 6-3, 6-4.

Television Tennis analyst Mary Jo Fernandez (L) and Alex Rodriguez of the New York Yankees watches Roger Federer of Switzerland hits a return against Jurgen Melzer of Austria during day eight of the 2010 U.S. Open at the USTA Billie Jean King National Tennis Center on September 6, 2010 in the Flushing neighborhood of the Queens borough of New York City.

Roger Federer of Switzerland hits a return against Jurgen Melzer of Austria during day eight of the 2010 U.S. Open at the USTA Billie Jean King National Tennis Center on September 6, 2010 in the Flushing neighborhood of the Queens borough of New York City.

Jurgen Melzer of Austria hits a return against Roger Federer of Switzerland during day eight of the 2010 U.S. Open at the USTA Billie Jean King National Tennis Center on September 6, 2010 in the Flushing neighborhood of the Queens borough of New York City.

Richard Gasquet of France hits a return to compatriot Gael Monfils during the U.S. Open tennis tournament in New York.

Gael Monfils of France falls while trying to reach a return against compatriot Richard Gasquet.

Svetlana Kuznetsova of Russia returns a shot against Dominika Cibulkova of Slovakia during her women's singles match.

Dominika Cibulkova of Slovakia celebrates match point after defeating Svetlana Kuznetsova of Russia.

Dominika Cibulkova of Slovakia signs autographs after defeating Svetlana Kuznetsova of Russia.

Novak Djokovic of Serbia hits a return to Mardy Fish of the U.S.

Television host Ellen Degeneres returns a shot to Melanie Oudin (not pictured) during day eight of the 2010 U.S. Open at the USTA Billie Jean King National Tennis Center on September 6, 2010 in the Flushing neighborhood of the Queens borough of New York City.

Melanie Oudin is blindfolded while playing tennis against television host Ellen Degeneres (not pictured) during day eight of the 2010 U.S. Open at the USTA Billie Jean King National Tennis Center on September 6, 2010 in the Flushing neighborhood of the Queens borough of New York City.

Gael Monfils of France reacts during his match against compatriot Richard Gasquet during the U.S. Open tennis tournament in New York.