Johanna Konta of the United Kingdom reacts as she plays against Anastasija Sevastova of Latvia during their 2016 US Open Women's Singles match at the USTA Billie Jean King National Tennis Center in New York on September 4, 2016. (Photo by Kena Betancur/AFP/Getty Images)
US Open: Day 7
Johanna Konta of the United Kingdom returns a shot to Anastasija Sevastova of Lativa during her fourth round Women's Singles match on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Andy Lyons/Getty Images)
US Open: Day 7
Roberta Vinci of Italy celebrates winning a set against Lesia Tsurenko of Ukraine during their 2016 US Open Womens Singles match at the USTA Billie Jean King National Tennis Center in New York on September 4, 2016. (Photo by Jewel Samad/AFP/Getty Images)
US Open: Day 7
Gael Monfils of France hits a return to Marcos Baghdatis of Cyprus during their 2016 US Open Men's Singles match at the USTA Billie Jean King National Tennis Center in New York on September 4, 2016. (Photo by Eduardo Munoz Alvarez/AFP/Getty Images)
US Open: Day 7
Anastasija Sevastova of Lativa reacts against Johanna Konta of the United Kingdom during her fourth round Women's Singles match on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Andy Lyons/Getty Images)
US Open: Day 7
Roberta Vinci of Italy celebrates defeating Lesia Tsurenko of Ukraine during their 2016 US Open Womens Singles match at the USTA Billie Jean King National Tennis Center in New York on September 4, 2016. (Photo by Jewel Samad/AFP/Getty Images)
US Open: Day 7
Roberta Vinci of Italy returns a shot to Lesia Tsurenko of the Ukraine during her fourth round Women's Singles match on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 7
Roberta Vinci of Italy signs autographs as she leaves the court after defeating Lesia Tsurenko of Ukraine during their 2016 US Open Womens Singles match at the USTA Billie Jean King National Tennis Center in New York on September 4, 2016. (Photo by Jewel Samad/AFP/Getty Images)
US Open: Day 7
Gael Monfils of France hits a return to Marcos Baghdatis of Cyprus during their 2016 US Open Men's Singles match at the USTA Billie Jean King National Tennis Center in New York on September 4, 2016. (Photo by Eduardo Munoz Alvarez/AFP/Getty Images)
US Open: Day 7
Marcos Baghdatis of Cyprus reacts against Gael Monfils of France during his fourth round Men's Singles match on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Queens borough of New York City. (Photo by Mike Stobe/Getty Images for USTA)
US Open: Day 7
Madison Keys of the United States returns a shot to Caroline Wozniacki of Denmark during her fourth round Women's Singles match on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Andy Lyons/Getty Images)
Vanessa Williams At US Open
Vanessa Williams and Jeanne Moutoussamy-Ashe watch the fourth round Women's Singles match between Caroline Wozniacki of Denmark and Madison Keys of the United States on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Andy Lyons/Getty Images)
US Open: Day 7
Caroline Wozniacki of Denmark celebrates her win over Madison Keys of the United States during her fourth round Women's Singles match on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Andy Lyons/Getty Images)
US Open: Day 7
Caroline Wozniacki of Denmark celebrates her win over Madison Keys of the United States during her fourth round Women's Singles match on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Andy Lyons/Getty Images)
US Open: Day 7
TOPSHOT - Rafael Nadal of Spain reacts as he plays against Lucas Pouille of France during their US Open Men's Singles match at the USTA Billie Jean King National Tennis Center in New York on September 4, 2016. (Photo by Kena Betancur/AFP/Getty Images)
US Open: Day 7
Rafael Nadal of Spain serves to Lucas Pouille of France during their US Open Men's Singles match at the USTA Billie Jean King National Tennis Center in New York on September 4, 2016. (Photo by Eduardo Munoz Alvarez/AFP/Getty Images)
US Open: Day 7
Fans wait for autographs after Jo-Wilfried Tsonga of France defeated Jack Sock of the United States on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 7
Jo-Wilfried Tsonga of France serves to Jack Sock of the United States during his fourth round Men's Singles match on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 7
Jo-Wilfried Tsonga of France serves against Jack Sock of the US during their 2016 US Open Mens Singles match at the USTA Billie Jean King National Tennis Center in New York on September 4, 2016. / AFP / Jewel SAMAD (Photo credit should read JEWEL SAMAD/AFP/Getty Images)
US Open: Day 7
Jack Sock of the United States returns a shot to Jo-Wilfried Tsonga of France during his fourth round Men's Singles match on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 7
Lucas Pouille of France reacts against Rafael Nadal of Spain during his fourth round Men's Singles match on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Andy Lyons/Getty Images)
US Open: Day 7
Yifan Xu and Saisai Zheng of China in action against Martina Hingis of Switzerland and Coco Vandeweghe of the United States during their third round Women's Doubles match on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Goodlett/Getty Images)
US Open: Day 7
Fans gather outside of Arthur Ashe Stadium during the fourth round Men's Singles match between Rafael Nadal of Spain serves to Lucas Pouille of France on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Goodlett/Getty Images)
US Open: Day 7
Lucas Pouille of France celebrates defeating Rafael Nadal of Spain during their 2016 US Open Mens Singles match at the USTA Billie Jean King National Tennis Center in New York on September 4, 2016. (Photo by Don Emmert/AFP/Getty Images)
US Open: Day 7
Lucas Pouille of France reacts after defeating Rafael Nadal of Spain during his fourth round Men's Singles match on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Hewitt/Getty Images)
US Open: Day 7
Lucas Pouille of France reacts after defeating Rafael Nadal of Spain during his fourth round Men's Singles match on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Hewitt/Getty Images)
US Open: Day 7
Lucas Pouille of France shakes hands after defeating Rafael Nadal of Spain during his fourth round Men's Singles match on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Michael Reaves/Getty Images)
US Open: Day 7
Rafael Nadal of Spain reacts against Lucas Pouille of France during his fourth round Men's Singles match on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Goodlett/Getty Images)
US Open: Day 7
Rafael Nadal of Spain reacts against Lucas Pouille of France during his fourth round Men's Singles match on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Steven Ryan/Getty Images)
Hugh Grant At US Open
Hugh Grant and Anna Eberstein seen at USTA Billie Jean King National Tennis Center on September 4, 2016 in the Queens borough of New York City. (Photo by BBD/GC Images)
US Open: Day 7
Mike Bryan and Bob Bryan of the United States in action against David Marrero and Fernando Verdasco of Spain during his third round Men's Singles match on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 7
Angelique Kerber of Germany returns a shot to Petra Kvitova of the Czech Republic during her fourth round Women's Singles match on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Andy Lyons/Getty Images)
US Open: Day 7
Novak Djokovic of Serbia hits a return in his match against Kyle Edmund of Great Britain on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Michael Reaves/Getty Images)
US Open: Day 7
A general view is seen as Jack Sock of the United States plays against Jo-Wilfried Tsonga of France during their fourth round Men's Singles match on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Queens borough of New York City. (Photo by Chris Trotman/Getty Images for USTA)
US Open: Day 7
Novak Djokovic of Serbia reacts after defeating Kyle Edmund of Great Britain during his fourth round Men's Singles match on Day Seven of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Michael Reaves/Getty Images)
