US Open Day 5

during day five of the 2009 U.S. Open at the USTA Billie Jean King National Tennis Center on September 4, 2009 in the Flushing neighborhood of the Queens borough of New York City.

US singers Ashlee Simpson and singer Pete Wentz

US singers Ashlee Simpson and singer Pete Wentz watch Swiss tennis player Roger Federer against Austrian tennis player Jurgen Melzer, during their match at the 2010 US Open tennis tournament September 6, 2010, in New York. AFP PHOTO/Emmanuel Dunand (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)

Natalie Portman

Actress Natalie Portman (R) watches Roger Federer of Switzerland during the men's final match against Andy Murray of Great Britain at the US Open tennis tournament on September 8, 2008 at the USTA National Tennis Center in New York City. AFP PHOTO / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)

Regis Philbin

during 2008 U.S. Open Men's Championship Match in Arthur Ashe Stadium at the USTA Billie Jean King National Tennis Center on September 8, 2008 in the Flushing neighborhood of the Queens borough of New York City.

US actor Bruce Willis and Emma Heming

US actor Bruce Willis and Emma Heming watch Juan Martin Del Potro of Argentina play Roger Federer of Switzerland during the men's final US Open match at the USTA Billie Jean King National Tennis Center on September 14, 2009 in New York. AFP PHOTO/TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)

Donald Trump and his wife Melania Knauss

Donald Trump and his wife Melania Knauss-Trump and son Barron William Trump watch Roger Federer of Switzerland play Serbia's Novak Djokovic in the US Open semifinals at the USTA Billie Jean King National Tennis Center in New York on September 11, 2010. AFP PHOTO / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)

US Open Day 14

during day fourteen of the 2009 U.S. Open at the USTA Billie Jean King National Tennis Center on September 13, 2009 in the Flushing neighborhood of the Queens borough of New York City.

US actress Eva Longoria (L), husband bas

US actress Eva Longoria (L), husband basket-baller Frenchman Tony Parker watch the French Open tennis men's final match between Swiss Roger Federer and Swedish player Robin Soderling on June 7, 2009 at Roland Garros Stadium in Paris. The event, the second Grand Slam tournament of 2009, runs from May 25 to June 7, 2009. Fererer won 6/1,7/6,6/4. AFP PHOTO / BERTRAND GUAY (Photo credit should read BERTRAND GUAY/AFP/Getty Images)

Nicole Kidman and Keith Urban

Nicole Kidman and Keith Urban watch Roger Federer from Switzerland (1) against Tommy Robredo from Spain (14) during their 4th round US Open match at the USTA Billie Jean King National Tennis Center September 7, 2009 in New York. AFP PHOTO / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)

US Open Day 9

during day nine of the 2009 U.S. Open at the USTA Billie Jean King National Tennis Center on September 8, 2009 in the Flushing neighborhood of the Queens borough of New York City.

US Open Day 11

during day eleven of the 2009 U.S. Open at the USTA Billie Jean King National Tennis Center on September 10, 2009 in the Flushing neighborhood of the Queens borough of New York City.

US Open Day 15

during day fifteen of the 2009 U.S. Open at the USTA Billie Jean King National Tennis Center on September 14, 2009 in the Flushing neighborhood of the Queens borough of New York City.

US Open Day 14

during day fourteen of the 2009 U.S. Open at the USTA Billie Jean King National Tennis Center on September 13, 2009 in the Flushing neighborhood of the Queens borough of New York City.

US Open Day 15

during day fifteen of the 2009 U.S. Open at the USTA Billie Jean King National Tennis Center on September 14, 2009 in the Flushing neighborhood of the Queens borough of New York City.

US singer Beyonce (R) and her husband US

US singer Beyonce (R) and her husband US rap singer Jay-Z (L) watch the men's final match between Spain's Rafael Nadal and Sweden's Robin Soderling in the French Open tennis championship at the Roland Garros stadium, on June 6, 2010, in Paris. AFP PHOTO BERTRAND GUAY (Photo credit should read BERTRAND GUAY/AFP/Getty Images)

U.S. Open - Day 3

during day three of the 2010 U.S. Open at the USTA Billie Jean King National Tennis Center on September 1, 2010 in the Flushing neighborhood of the Queens borough of New York City.

US actress Brooklyn Decker watches her h

US actress Brooklyn Decker watches her husband tennis player Andy Roddick returns a point to Serbia's Janko Tipsarevic, during their second round match at the 2010 US Open tennis tournament September 1, 2010, in New York. AFP PHOTO/Emmanuel Dunand (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)

US singer John Legend and his girlfriend

US singer John Legend and his girlfriend watch tennis player Andy Roddick returns a point to Serbia's Janko Tipsarevic, during their second round match at the 2010 US Open tennis tournament September 1, 2010, in New York. AFP PHOTO/Emmanuel Dunand (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)

U.S. Open - Day 6

during day six of the 2010 U.S. Open at the USTA Billie Jean King National Tennis Center on September 4, 2010 in the Flushing neighborhood of the Queens borough of New York City.

U.S. Open - Day 8

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.

U.S. Open - Day 8

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.

US actor Alec Baldwin

US actor Alec Baldwin watches Belgium tennis player Kim Clijsters returns a point against Australian tennis player Samantha Stosur Belgium player Kim Clijsters, during their quarterfinals match at the 2010 US Open tennis tournament September 7, 2010, in New York. AFP PHOTO/Emmanuel Dunand (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)

US singer Gwen Stefani

US singer Gwen Stefani watches the match between Swiss tennis player Roger Federer and Swedish tennis player Robin Soderling, during their quarterfinals match at the 2010 US Open tennis tournament September 8, 2010, in New York. AFP PHOTO/Emmanuel Dunand (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)

U.S. Open - Day 11

during day eleven of the 2010 U.S. Open at the USTA Billie Jean King National Tennis Center on September 9, 2010 in the Flushing neighborhood of the Queens borough of New York City.

U.S. Open - Day 15

during day fifteen of the 2010 U.S. Open at the USTA Billie Jean King National Tennis Center on September 13, 2010 in the Flushing neighborhood of the Queens borough of New York City.

U.S. Open - Day 15

during day fifteen of the 2010 U.S. Open at the USTA Billie Jean King National Tennis Center on September 13, 2010 in the Flushing neighborhood of the Queens borough of New York City.

U.S. Open - Day 15

during day fifteen of the 2010 U.S. Open at the USTA Billie Jean King National Tennis Center on September 13, 2010 in the Flushing neighborhood of the Queens borough of New York City.

U.S. Open - Day 15

during day fifteen of the 2010 U.S. Open at the USTA Billie Jean King National Tennis Center on September 13, 2010 in the Flushing neighborhood of the Queens borough of New York City.