Nick Kyrgios of Australia is examined during his third round Men's Singles match on Day Six of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 3, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Goodlett/Getty Images)
TEN-US OPEN-DAY 6
Stan Wawrinka of Switzerland celebrates victory over Daniel Evans of the United Kingdom in their 2016 US Open men's single match at the USTA Billie Jean King National Tennis Center in New York on September 3, 2016. (Photo by Timothy A. Clary/AFP/Getty Images)
US Open: Day 6
Venus Williams of the United States celebrates defeating Laura Siegemund of Germany during her third round Women's Singles match on Day Six of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 3, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Goodlett/Getty Images)
2016 US Open - Day 6
Fans look for autographs from Kei Nishikori of Japan after he defeated Nicolas Mahut of France during his third round Men's Singles match on Day Six of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 3, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 6
Juan Martin del Potro of Argentina celebrates his win over David Ferrer of Spain during their US Open 2016 men's single match at the USTA Billie Jean King National Tennis Center in New York on September 3, 2016. (Photo by Timothy A. Clary/AFP/Getty Images)
US Open: Day 6
Paolo Lorenzi of Italy serves to Andy Murray of Great Britain during their 2016 US Open men's singles match at the USTA Billie Jean King National Tennis Center in New York on September 3, 2016. (Photo by Eduardo Munoz Alvarez/AFP/ Getty Images)
US Open: Day 6
Andy Murray of Great Britain serves to Paolo Lorenzi of Italy during their 2016 US Open men's singles match at the USTA Billie Jean King National Tennis Center in New York on September 3, 2016. (Photo by Eduardo Munoz Alvarez/AFP/ Getty Images)
TOPSHOT-TEN-US OPEN-DAY 6
Karolina Pliskova of the Czech Republic serves against Anastasia Pavlyuchenkova of Russia during their 2016 US Open Women's Singles match at the USTA Billie Jean King National Tennis Center in New York on September 3, 2016. (Photo by Kena Betancur/AFP/Getty Images)
2016 US Open - Day 6
Laura Siegemund of Germany reacts against Venus Williams of the United States during her third round Women's Singles match on Day Six of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 3, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Goodlett/Getty Images)
US Open: Day 6
David Ferrer of Spain returns a shot to Juan Martin del Potro of Argentina during his third round Men's Singles match on Day Six of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 3, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Andy Lyons/Getty Images)
US Open: Day 6
Serena Williams of US serves to Johanna Larsson of Sweden during their 2016 US Open women's singles match at the USTA Billie Jean King National Tennis Center in New York on September 3, 2016. (Photo by Eduardo Munoz Alvarez/AFP/ Getty Images)
US Open: Day 6
Serena Williams of the United States returns a shot to Johanna Larsson of Sweden during her third round Women's Singles match on Day Six of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 3, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Hewitt/Getty Images)
US Open: Day 6
Serena Williams of the US celebrates her victory over Johanna Larsson of Sweden during their 2016 US Open women's singles match at the USTA Billie Jean King National Tennis Center on September 3, 2016 in New York. (Photo by Don Emmert/AFP/Getty Images)
Carmelo Anthony At US Open
Knicks star Carmelo Anthony, Kelly Rowland of Destiny's Child and Anthony's wife, La La, attend the third-round victory of their friend, Serena Williams, on Sept. 3, 2016, at the USTA Billie Jean King National Tennis Center. (Photo by Jean Catuffe/GC Images)
US Open: Day 6
A general view of Arthur Ashe Stadium during the third round Women's Singles match between Serena Williams of the United States and Johanna Larsson of Sweden on Day Six of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 3, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Al Bello/Getty Images)
Kevin Spacey At US Open
"House of Cards" star Kevin Spacey seen at the USTA Billie Jean King National Tennis Center on Sept. 3, 2016. (Photo by BBD/GC Images)
US Open: Day 6
Agnieszka Radwanska of Poland returns a shot to Caroline Garcia of France during her third round Women's Singles match on Day Six of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 3, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Andy Lyons/Getty Images)
US Open: Day 6
Simona Halep of Romania throws her racket during the match against Timea Babos of Hungary during her third round Women's Singles match on Day Six of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 3, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Al Bello/Getty Images)
US Open: Day 6
Timea Babos of Hungary reacts against Simona Halep of Romania during her third round Women's Singles match on Day Six of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 3, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Hewitt/Getty Images)
US Open: Day 6
Simona Halep of Romania returns a shot to Timea Babos of Hungary during her third round Women's Singles match on Day Six of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 3, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Hewitt/Getty Images)
Alec Baldwin At US Open
Alec Baldwin and wife Hilaria Baldwin attend Day 6 of the US Open at USTA Billie Jean King National Tennis Center on Sept. 3, 2016. (Photo by Jean Catuffe/GC Images)
Sean Hannity At US Open
TV and radio personality Sean Hannity attends Day 6 of the US Open on Sept. 3, 2016, at the USTA Billie Jean King National Tennis Center. (Photo by Jean Catuffe/GC Images)
US Open: Day 5
Roberta Vinci of Italy returns a shot to Carina Witthoeft of Germany during her third round Women's Singles match on Day Five of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Al Bello/Getty Images)
US Open: Day 5
Caroline Wozniacki of Denmark celebrates her win over Monica Niculescu of Romania during her third round Women's Singles match on Day Five of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2016 in the Queens borough of New York City. (Photo by Mike Stobe/Getty Images for USTA)
US Open: Day 5
Naomi Osaka of Japan serves to Madison Keys of the United States during her third round Women's Singles match on Day Five of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 5
Dominika Cibulkova of Slovakia returns a shot to Lesia Tsurenko of the Ukraine during her third round Women's Singles match on Day Five of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Andy Lyons/Getty Images)
US Open: Day 5
Madison Keys of the United States celebrates her victory over Naomi Osaka of Japan during her third round Women's Singles match on Day Five of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 5
Jack Sock of the United States signs autographs for fans after his win over Marin Cilic of Croatia during his third round Men's Singles match on Day Five of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Al Bello/Getty Images)
US Open: Day 5
Caroline Wozniacki of Denmark returns a shot to Monica Niculescu of Romania during her third round Women's Singles match on Day Five of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 5
The sun sets over Louis Armstrong Stadium during the third round Men's Singles match between John Isner of the United States and Kyle Edmund of Great Britain on Day Five of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Steven Ryan/Getty Images)
US Open: Day 5
Rafael Nadal of Spain celebrates victory at the end of his Third Round match with Andrey Kusnetsov of Russia on Day Five of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Hewitt/Getty Images)
US Open: Day 5
Kyle Edmund of Great Britain celebrates a win over John Isner of the United States during his third round Men's Singles match on Day Five of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Goodlett/Getty Images)
US Open: Day 5
Angelique Kerber of Germany reacts after winning the first set during her third round match against Catherine Bellis of USA on Day Five of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2016 in the Queens borough of New York City. (Photo by Chris Trotman/Getty Images for USTA)
US Open: Day 5
Catherine Bellis of USA reacts to a point during her third round match against Angelique Kerber of Germany on Day Five of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2016 in the Queens borough of New York City. (Photo by Chris Trotman/Getty Images for USTA)
US Open: Day 5
Gael Monfils of France serves to Nicolas Almagro of Spain during his third round Men's Singles match on Day Five of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Hewitt/Getty Images)
US Open: Day 5
Petra Kvitova of the Czech Republic celebrates her win over Elina Svitolina of the Ukraine during her third round Women's Singles match on Day Five of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Al Bello/Getty Images)
US Open: Day 5
Novak Djokovic of Serbia returns a shot to Mikhail Youzhny of Russia during his third round Men's Singles match on Day Five of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Goodlett/Getty Images)
US Open: Day 5
Roberto Bautista Agut of Spain serves to Lucas Pouille of France during his third round Men's Singles match on Day Five of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Andy Lyons/Getty Images)
Bill Cowher At US Open
Former Pittsburgh Steelers coach Bill Cowher attends Day 6 of the US Open at the USTA Billie Jean King National Tennis Center on Sept. 3, 2016. (Photo by Jean Catuffe/GC Images)
