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NEW YORK, NY - AUGUST 27: Model Ester Satorova watches boyfriend Tomas Berdych of the Czech Republic play Lleyton Hewitt of Australia during their men's singles first round match on Day Three of the 2014 US Open at the USTA Billie Jean King National Tennis Center on August 27, 2014 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Streeter Lecka/Getty Images) ( 454258102 )

NEW YORK, NY - AUGUST 26: Roger Federer of Switzerland reacts against Marinko Matosevic of Australia during their men's singles first round match on Day Two of the 2014 US Open at the USTA Billie Jean King National Tennis Center on August 26, 2014 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images) ( 454227056 )

Roger Federer, of Switzerland, jumps as he serves to Marinko Matosevic, of Australia, during the first round of the 2014 U.S. Open tennis tournament Tuesday, Aug. 26, 2014, in New York. (AP Photo/Darron Cummings) ( US Open Tennis )

NEW YORK, NY - AUGUST 26: Basketball Hall of Famer Michael Jordan watches as Roger Federer of Switzerland plays against Marinko Matosevic of Australia during their men's singles first round match on Day Two of the 2014 US Open at the USTA Billie Jean King National Tennis Center on August 26, 2014 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images) ( 454225570 )

NEW YORK, NY - AUGUST 25: Camila Giorgi of Italy returns a shot against Anastasia Rodionova of Australia during her women's singles round one match on Day One of the 2014 US Open at the USTA Billie Jean King National Tennis Center on August 25, 2014 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Al Bello/Getty Images) ( 454149140 )

Maria Sharapova, of Russia, chases down a shot against Alexandra Dulgheru, of Romania, during the second round of the 2014 U.S. Open tennis tournament, Wednesday, Aug. 27, 2014, in New York. (AP Photo/Matt Rourke) ( APTOPIX 2014 US Open Tennis )

NEW YORK, NY - AUGUST 27: Grigor Dimitrov of Bulgaria reacts after defeating Ryan Harrison of the United States during their men's singles first round match on Day Three of the 2014 US Open at the USTA Billie Jean King National Tennis Center on August 27, 2014 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Julian Finney/Getty Images) ( 454266340 )

NEW YORK, NY - AUGUST 26: Catherine Bellis of the United States reacts against Dominika Cibulkova of Slovakia during their women's singles first round match on Day Two of the 2014 US Open at the USTA Billie Jean King National Tennis Center on August 26, 2014 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Streeter Lecka/Getty Images) ( 454220018 )

Serena Williams, of the United States, reacts after losing a game to Taylor Townsend, of the United States, during the opening round of the U.S. Open tennis tournament Tuesday, Aug. 26, 2014, in New York. (AP Photo/Jason DeCrow) ( 2014 US Open Tennis )

NEW YORK, NY - AUGUST 27: Venus Williams of the United States returns a shot against Timea Bacsinszky of Switzerland during their women's singles secound round match on Day Three of the 2014 US Open at the USTA Billie Jean King National Tennis Center on August 27, 2014 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Julian Finney/Getty Images) ( 454269398 )

NEW YORK, NY - AUGUST 27: Agnieszka Radwanska of Poland looks on against Shuai Peng of China on Day Three of the 2014 US Open at the USTA Billie Jean King National Tennis Center on August 27, 2014 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Julian Finney/Getty Images) ( 454251900 )

NEW YORK, NY - AUGUST 25: Actor Alec Baldwin attends on Day One of the 2014 US Open at the USTA Billie Jean King National Tennis Center on August 25, 2014 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Chris Trotman/Getty Images for USTA) ( 454164690 )

NEW YORK, NY - AUGUST 27: Grigor Dimitrov of Bulgaria is interview after defeating Ryan Harrison of the United States during their men's singles first round match on Day Three of the 2014 US Open at the USTA Billie Jean King National Tennis Center on August 27, 2014 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Julian Finney/Getty Images) ( 454266348 )

Tomas Berdych, of the Czech Republic, follows through on a shot against Lleyton Hewitt, of Australia, during the second round of the 2014 U.S. Open tennis tournament, Wednesday, Aug. 27, 2014, in New York. (AP Photo/Matt Rourke) ( 2014 US Open Tennis )

Simona Halep, of Romania, returns a shot against Danielle Rose Collins, of the United States, during the opening round of the 2014 U.S. Open tennis tournament, Monday, Aug. 25, 2014, in New York. (AP Photo/Elise Amendola) ( 2014 US Open Tennis )

Benoit Paire, of France, flips his racket after a shot against Julien Benneteau, of France, during the opening round of the 2014 U.S. Open tennis tournament, Monday, Aug. 25, 2014, in New York. (AP Photo/Frank Franklin II) ( 2014 US Open Tennis )

NEW YORK, NY - AUGUST 25: Jelena Jankovic of Serbia reacts against Bojana Jovanovski of Serbia on Day One of the 2014 US Open at the USTA Billie Jean King National Tennis Center on August 25, 2014 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Goodlett/Getty Images) ( 454147502 )

NEW YORK, NY - AUGUST 26: Jarkko Nieminen of Finland returns a shot against Ivo Karlovic of Croatia during their men's singles first round match on Day Two of the 2014 US Open at the USTA Billie Jean King National Tennis Center on August 26, 2014 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Streeter Lecka/Getty Images) ( 454206612 )

NEW YORK, NY - AUGUST 25: Editor of Vogue Anna Wintour (R) and her daughter Bee Shaffer attend Day One of the 2014 US Open at the USTA Billie Jean King National Tennis Center on August 25, 2014 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images) ( 454159196 )

NEW YORK, NY - AUGUST 26: Marion Bartoli, watches as Donna Vekic of Croatia plays against Coco Vandeweghe of the United States during her women's singles first round match on Day Two of the 2014 US Open at the USTA Billie Jean King National Tennis Center on August 26, 2014 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Julian Finney/Getty Images) ( 454222318 )