Roberta Vinci of Italy celebrates her win against Anna-Lena Friedsam of Germany during their 2016 US Open 2016 Women's Singles match at the USTA Billie Jean King National Tennis Center on August 29, 2016 in New York. (Photo by Timothy A. Clary/AFP/Getty Images)
US Open: Day 1
Novak Djokovic of Serbia & Montenegro returns a shot to Jerzy Janowicz of Poland during his first round Men's Singles match on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 1
Johanna Konta of the United Kingdom hits a return to Bethanie Mattek-Sands of the United States during their 2016 US Open Men's Singles match at the USTA Billie Jean King National Tennis Center in New York on August 29, 2016. (Photo by Kena Betancur/AFP/Getty Images)
US Open: Day 1
Bethanie Mattek-Sands of the US returns against Johanna Konta of the United Kingdom during their 2016 US Open Men's Singles match at the USTA Billie Jean King National Tennis Center in New York on August 29, 2016. (Photo by Kena Betancur/AFP/Getty Images)
US Open: Day 1
A general view of court 12 during the first round Men's Singles match the between Benoit Paire of France and Dusan Lajovic of Serbia & Montenegro on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Michael Reaves/Getty Images))
US Open: Day 1
Dustin Brown of Germany returns a shot to Milos Raonic of Canada during his first round Men's Singles match on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Michael Reaves/Getty Images)
US Open: Day 1
Phil Collins performs during the opening ceremony at the 2016 US Open on August 29, 2016 in New York. (Photo by Don Emmert/AFP/Getty Images)
US Open: Day 1
Anna Wintour watches the first round Men's Singles match between Novak Djokovic of Serbia & Montenegro and Jerzy Janowicz of Poland on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 1
Debra Messing watches the first round Men's Singles match between Novak Djokovic of Serbia & Montenegro and Jerzy Janowicz of Poland on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 1
Jerzy Janowicz of Poland celebrates after winning the second set against Novak Djokovic of Serbia & Montenegro during his first round Men's Singles match on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 1
Monica Niculescu of Romania reacts against Barbora Strycova of Czech Republic during her first round Women's Singles match on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Al Bello/Getty Images)
US Open: Day 1
A general view is seen as Phil Collins performs during opening ceremonies on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Queens borough of New York City. (Photo by Mike Stobe/Getty Images for USTA)
US Open: Day 1
Novak Djokovic of Serbia hits a return against Jerzy Janowicz of Poland during their 2016 US Open Men's Singles match at the USTA Billie Jean King National Tennis Center in New York on August 29, 2016. (Photo by Jewel Samad/AFP/Getty Images)
US Open: Day 1
Alec Baldwin watches the first round Men's Singles match between Novak Djokovic of Serbia & Montenegro and Jerzy Janowicz of Poland on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 1
Phil Collins performs on opening night prior to the evening session on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 1
John Isner of the United States reacts after his first round Men's Singles match victory against Frances Tiafoe of the United States on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Goodlett/Getty Images)
US Open: Day 1
Phil Collins (right) and Leslie Odom, Jr. perform "Easy Lover" during opening ceremonies on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Queens borough of New York City. (Photo by Mike Stobe/Getty Images for USTA)
US Open: Day 1
Caroline Wozniacki of Denmark returns a shot to Taylor Townsend of the United States during her first round Women's Singles match on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Goodlett/Getty Images)
US Open: Day 1
Rafael Nadal of Spain returns a shot to Denis Istomin of Uzbekistan during his first round Men's Singles match on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 1
Gael Monfils of France returns a shot to Gilles Muller of Luxembourg during his first round Men's Singles match on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Andy Lyons/Getty Images)
US Open: Day 1
Rafael Nadal of Spain celebrates his first round Men's Singles match win against Denis Istomin of Uzbekistan on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Michael Reaves/Getty Images)
US Open: Day 1
A general view is seen as Phil Collins performs during opening ceremonies on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Queens borough of New York City. (Photo by Mike Stobe/Getty Images for USTA)
US Open: Day 1
USTA Director at Large and former New York City Mayor David N. Dinkins watches the first round Men's Singles match between Novak Djokovic of Serbia & Montenegro and Jerzy Janowicz of Poland on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 1
Mike Tyson watches the first round Men's Singles match between Novak Djokovic of Serbia & Montenegro and Jerzy Janowicz of Poland on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 1
Susan Sarandon watches the first round Men's Singles match between Novak Djokovic of Serbia & Montenegro and Jerzy Janowicz of Poland on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 1
Rafael Nadal of Spain reacts during his first round Men's Singles match against Denis Istomin of Uzbekistan on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Michael Reaves/Getty Images)
US Open: Day 1
Dominika Cibulkova of Slovakia returns against Magda Linette of Poland during their 2016 US Open Women's Singles match at the USTA Billie Jean King National Tennis Center in New York on August 29, 2016. (Photo by Eduardo Monoz/AFP/Getty Images)
US Open: Day 1
Garbiñe Muguruza of Spain serves to Elise Mertens of Belgium during her first round Women's Singles match on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Hewitt/Getty Images)
US Open: Day 1
Aliaksandra Sasnovich of Belarus returns a shot to Lauren Davis during her first round Women's Singles match on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Andy Lyons/Getty Images)
US Open: Day 1
(Photo by Elsa/Getty Images)
US Open: Day 1
Former tennis player Billie Jean King waves to the crowd during opening night prior to the evening session on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 1
Fans await autographs from Rafael Nadal of Spain after his first round Men's Singles match victory over Denis Istomin of Uzbekistan on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
US Open: Day 1
Naomi Osaka of Japan returns a shot to Coco Vandeweghe of the United States during her first round Women's Singles match on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Goodlett/Getty Images)
US Open: Day 1
Alizé Cornet of France returns a shot to Mirjana Lucic-Baroni Croatia during her first round Women's Singles match on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Joe Scarnici/Getty Images)
US Open: Day 1
Caroline Wozniacki of Denmark returns a shot to Taylor Townsend of the United States during her first round Women's Singles match on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Goodlett/Getty Images)
US Open: Day 1
General view of the stadium during showing Caroline Wozniacki of Denmark and Taylor Townsend of the US at the 2016 US Open Women's Singles Round 1 match at the USTA Billie Jean King National Tennis Center on August 29, 2016 in New York. (Photo by Kena Betanur/AFP/Getty Images)
US Open: Day 1
Caroline Wozniacki of Denmark returns a shot to Taylor Townsend of the United States during her first round Women's Singles match on Day One of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Goodlett/Getty Images)