Simona Halep of Romania returns a shot to Kirsten Flipkens of Belgium during her first round Women's Singles match on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Hewitt/Getty Images)
US Open: Day 2
Andy Murray of Great Britain reacts during his first round Men's Singles match against Lukas Rosol of the Czech Republic on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Andy Lyons/Getty Images)
US Open: Day 2
Andy Murray of Great Britain serves to Lukas Rosol of the Czech Republic during his first round Men's Singles match on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Hewitt/Getty Images)
US Open: Day 2
Serena Williams of the U.S. (left) and Ekaterina Makarova of Russia play during their 2016 US Open women's singles match at the USTA Billie Jean King National Tennis Center on August 30, 2016 in New York. (Photo by Timothy A. Clary/AFP/Getty Images)
US Open: Day 2
Yen-Hsun Lu of Taipei serves against Ivo Karlovic of Croatiav during his first round Men's Singles match on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Queens borough of New York City. (Photo by Mike Stobe/Getty Images for USTA)
US Open: Day 2
Kristina Mladenovic of France reacts against Nao Hibino of Japan during her first round Women's Singles match on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Goodlett/Getty Images)
US Open: Day 2
Sofia Kenin of the US hits a return against Karolina Pliskova of the Czech Republic during their 2016 US Open Women's Singles match at the USTA Billie Jean King National Tennis Center in New York on August 30, 2016. (Photo by Eduardo Munoz Alvarez/AFP/Getty Images)
Kevin Spacey At US Open
Kevin Spacey, left, watches the first round Women's Singles match between Serena Williams of the United States and Ekaterina Makarova of Russia on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Hewitt/Getty Images)
Andre Agassi At US Open
Former tennis player Andre Agassi watches the first round Men's Singles match between Andy Murray of Great Britain and Lukas Rosol of the Czech Republic on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Hewitt/Getty Images)
US Open: Day 2
Ivo Karlovic of Croatia returns a shot to Yen-Hsun Lu of Taipei during his first round Men's Singles match on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Queens borough of New York City. (Photo by Mike Stobe/Getty Images for USTA)
US Open: Day 2
Serena Williams of the United States celebrates her victory over Ekaterina Makarova of Russia during her first round Women's Singles match on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Hewitt/Getty Images)
US Open: Day 2
Serena Williams of the United States reacts against Ekaterina Makarova of Russia during her first round Women's Singles match on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Hewitt/Getty Images)
2016 US Open - Day 2
Nick Kyrgios of Australia is tended to by the trainer against Aljaz Bedene of Great Britain during his first round Men's Singles match on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Andy Lyons/Getty Images)
US Open: Day 2
Serena Williams of the US hits a return to Ekaterina Makarova of Russia play during their 2016 US Open women's singles match at the USTA Billie Jean King National Tennis Center on August 30, 2016 in New York. (Photo by Don Emmert/AFP/Getty Images)
US Open: Day 2
Fans await autographs on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 2
Damir Dzumhur of Bosnia and Herzegovina celebrates after defeating Bernard Tomic of Australia in his first round Men's Singles match on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Andy Lyons/Getty Images)
US Open: Day 2
Damir Dzumhur of Bosnia and Herzegovina serves to Bernard Tomic of Australia during his first round Men's Singles match on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Andy Lyons/Getty Images)
US Open: Day 2
Jelena Jankovic of Serbia returns a shot to Mariana Duque-Mariño of Colombia during her first round Women's Singles match on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Michael Reaves/Getty Images)
US Open: Day 2
Venus Williams of the United States returns a shot to Kateryna Kozlova of Ukraine during her first round Women's Singles match on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Hewitt/Getty Images)
US Open: Day 2
Venus Williams of the United States reacts after defeating Kateryna Kozlova of Ukraine during her first round Women's Singles match on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Hewitt/Getty Images)
US Open: Day 2
Dominic Thiem of Austria serves to John Millman of Australia during their 2016 US Open Men's Singles match at the USTA Billie Jean King National Tennis Center in New York on August 30, 2016. (Photo by Eduardo Munoz/AFP/Getty Images)
US Open: Day 2
Camila Giorgi of Italy serves to Samantha Stosur of Australia during her first round Women's Singles match on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 2
Kateryna Kozlova of Ukraine returns a shot to Venus Williams of the United States during her first round Women's Singles match on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Hewitt/Getty Images)
US Open: Day 2
Stan Wawrinka of Switzerland reacts after defeating Fernando Verdasco of Spain during his first round Men's Singles match on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Hewitt/Getty Images)
US Open: Day 2
David Ferrer of Spain returns serves to Alexandr Dolgopolov of Ukraine during his first round Men's Singles match on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Andy Lyons/Getty Images)
US Open: Day 2
Vitalia Diatchenko of Russia reacts against Timea Bacsinszky of Switzerland during her first round Women's Singles match on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Goodlett/Getty Images)
US Open: Day 2
Ellen Perez of Australia serves to Shuai Zhang of China on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Joe Scarnici/Getty Images)
US Open: Day 2
A general view of Grandstand during the first round Men's Singles match between Kei Nishikori of Japan and Benjamin Becker of Germany on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Al Bello/Getty Images)
2016 US Open - Day 2
Ana Ivanovic of Serbia returns a shot to Denisa Allertova of Czech Republic during her first round Women's Singles match on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
