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Rafael Nadal of Spain embraces
his trophy after defeating Novak Djokovic of Serbia in their men's final match at the U.S. Open tennis championships in New York, September 9, 2013.

Rafael Nadal of Spain celebrates
after defeating Novak Djokovic of Serbia in their men's final match at the U.S. Open tennis championships in New York, September 9, 2013.

Rafael Nadal of Spain celebrates
after defeating Novak Djokovic of Serbia in their men's final match at the U.S. Open tennis championships in New York, September 9, 2013.

Novak Djokovic of Serbia serves
to Rafael Nadal of Spain during their men's final match at the U.S. Open tennis championships in New York, September 9, 2013.

Rafael Nadal of Spain celebrates
a point against Novak Djokovic of Serbia in their men's final match at the U.S. Open tennis championships in New York, September 9, 2013.

Serena Williams raises her trophy
after defeating Victoria Azarenka of Belarus (L, holding runner up trophy) in their women's singles final match at the U.S. Open tennis championships in New York September 8, 2013.

Serena Williams holds her winner's
trophy as she embraces Victoria Azarenka of Belarus after Williams won their women's singles final match at the U.S. Open tennis championships in New York September 8, 2013.

Serena Williams celebrates after defeating
Victoria Azarenka of Belarus in their women's singles final match at the U.S. Open tennis championships in New York September 8, 2013.

Victoria Azarenka of Belarus wipes
her face as she sits by the winner's trophy (L) after being defeated by Serena Williams in their women's singles final match at the U.S. Open tennis championships in New York September 8, 2013.

Richard Gasquet of France waits
to hit a return to Rafael Nadal of Spain during their men's semi-final match at the U.S. Open tennis championships in New York September 7, 2013.

Rafael Nadal of Spain celebrates
after defeating Richard Gasquet of France in their men's semi-final match at the U.S. Open tennis championships in New York September 7, 2013.

Stanislas Wawrinka of Switzerland gets
up after a missed point against Novak Djokovic of Serbia during their men's semi-final match at the U.S. Open tennis championships in New York September 7, 2013.

Novak Djokovic of Serbia is
congratulated by Stanislas Wawrinka of Switzerland (R) after Djokovic won their men's semi-final match at the U.S. Open tennis championships in New York September 7, 2013.

Novak Djokovic of Serbia stretches
for a return to Stanislas Wawrinka of Switzerland during their men's semi-final match at the U.S. Open tennis championships in New York September 7, 2013.

Stanislas Wawrinka of Switzerland reacts
after a missed point against Novak Djokovic of Serbia during their men's semi-final match at the U.S. Open tennis championships in New York September 7, 2013.

Stanislas Wawrinka of Switzerland breaks
his racquet while playing against Novak Djokovic of Serbia during their men's semi-final match at the U.S. Open tennis championships in New York September 7, 2013

Spectators watch as Stanislas Wawrinka
of Switzerland (R) plays Novak Djokovic of Serbia during their men's semi-final match at the U.S. Open tennis championships in New York September 7, 2013.

Victoria Azarenka of Belarus serves
to Flavia Pennetta of Italy at the U.S. Open tennis championships in New York September 6, 2013.

Victoria Azarenka of Belarus celebrates
winning match point against Flavia Pennetta of Italy at the U.S. Open tennis championships in New York September 6, 2013.

Novak Djokovic of Serbia celebrates
as he plays Mikhail Youzhny of Russia during their quarter-final match at the U.S. Open tennis championships in New York September 5, 2013.

Leander Paes of India and
Radek Stepanek of the Czech Republic celebrate winning match point against Bob and Mike Bryan of the U.S. in their men's doubles match at the U.S. Open tennis championships in New York September 5, 2013.

Novak Djokovic of Serbia celebrates
defeating Mikhail Youzhny of Russia during their quarter-final match at the U.S. Open tennis championships in New York, September 5, 2013.

Actors Rainn Wilson (L) and
Jason Biggs celebrate during an exhibition doubles match against tennis greats Chris Evert and Monica Seles at the U.S. Open tennis championships in New York Sep 5, 2013.

Rafael Nadal of Spain keeps
his focus as he returns a volley to compatriot Tommy Robredo during their men's quarter-final match at the U.S. Open tennis championships in New York September 4, 2013.

Victoria Azarenka of Belarus comes
to the net against Daniela Hantuchova of Slovakia during their women's quarter-final match at the U.S. Open tennis championships in New York September 4, 2013.

Richard Gasquet of France casts
a shadow as he serves to David Ferrer of Spain at the U.S. Open tennis championships in New York September 4, 2013.

Stanislas Wawrinka of Switzerland slips
and falls during his match against Tomas Berdych of the Czech Republic at the U.S. Open tennis championships in New York September 3, 2013.

Mikhail Youzhny of Russia celebrates
his victory over Lleyton Hewitt of Australia at the U.S. Open tennis championships in New York September 3, 2013.

Mikhail Youzhny of Russia signs
autographs for fans following his victory over Lleyton Hewitt of Australia at the U.S. Open tennis championships in New York September 3, 2013.

David Ferrer of Spain hits
a return to Richard Gasquet of France at the U.S. Open tennis championships in New York September 4, 2013.

Novak Djokovic of Serbia slides
down to hit a return to Marcel Granollers of Spain at the U.S. Open tennis championships in New York September 3, 2013.

Ekaterina Makarova of Russia reaches
for a return to Li Na of China at the U.S. Open tennis championships in New York September 3, 2013.

Rafael Nadal of Spain celebrates
defeating Philipp Kohlschreiber of Germany at the U.S. Open tennis championships in New York, September 2, 2013.

Roger Federer of Switzerland walks
off the court after losing in three sets to Tommy Robredo of Spain at the U.S. Open tennis championships in New York September 2, 2013.

Roger Federer of Switzerland changes
his shirt during a second set break against Tommy Robredo of Spain at the U.S. Open tennis championships in New York September 2, 2013.

Spectators wait under their umbrellas
as rain halts play at the U.S. Open tennis championships in New York September 2, 2013.

Tomas Berdych of the Czech
Republic reacts after defeating Julien Benneteau of France at the U.S. Open tennis championships in New York September 1, 2013.

Li Na of China celebrates
defeating Jelena Jankovic of Serbia at the U.S. Open tennis championships in New York, September 1, 2013.

Novak Djokovic of Serbia returns
a backhand to Joao Sousa of Portugal at the U.S. Open tennis championships in New York, September 1, 2013.

Carla Suarez Navarro of Spain
reacts after defeating Angelique Kerber of Germany at the U.S. Open tennis championships in New York September 1, 2013.

Serena Williams of the U.S.
lunges for a ball while playing compatriot Sloane Stephens at the U.S. Open tennis championships in New York September 1, 2013.

Victoria Duval of the U.S.
celebrates defeating Samantha Stosur of Australia at the U.S. Open tennis championships in New York, August 27, 2013.

Ana Ivanovic of Serbia hits
a return to Alexandra Dulgheru of Romania as the shadows of spectators show on the court at the U.S. Open tennis championships in New York August 29, 2013.

Andy Murray of Britain serves
to Florian Mayer of Germany at the U.S. Open tennis championships in New York September 1, 2013.

John Isner of the U.S.
serves to Filippo Volandri of Italy as the shadows of spectators show on the court at the U.S. Open tennis championships in New York August 27, 2013.

Serena Williams of the U.S.
falls while playing Galina Voskoboeva of Kazakhstan at the U.S. Open tennis championships in New York August 29, 2013.

Novak Djokovic of Serbia runs
down a forehand against Ricardas Berankis of Lithuania during their first round match at the U.S. Open tennis championships in New York, August 27, 2013.

Venus Williams celebrates after her
victory over Kirsten Flipkens of Belgium at the U.S. Open tennis championships in New York, August 26, 2013.

Spectators watch as fireworks erupt
during the opening ceremonies of the U.S. Open tennis championships in New York, August 26, 2013. You Can Keep Listening To The Music Or Press ‘Esc’ To Exit COPYRIGHTS TO ALL PHOTOS AND MUSIC BELONG TO THE ORIGINAL AUTHORS. Nikos