US Open Tennis

NEW YORK, NY - SEPTEMBER 05: Novak Djokovic of Serbia smiles during break in play in his men's singles quarter-final match against John Millman of Australia on Day Ten of the 2018 US Open at the USTA Billie Jean King National Tennis Center on September 5, 2018 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Julian Finney/Getty Images)

Djokovic gets closer to an incredible second slam at U.S. Open: Recap

Rafael Nadal is the ultimate fighter in U.S. Open quarterfinal win

CoCo Vanedeweghe talks about the realities of the Tour

U.S. Open day 8: Federer dumped out by unseeded Millman

FLUSHING MEADOW, NY - SEPTEMBER 02: JOHN ISNER (USA) day seven of the 2018 US Open on September 02, 2018, at Billie Jean King National Tennis Center in Flushing Meadow, NY. (Photo by Chaz Niell/Icon Sportswire via Getty Images)

US Open day 7: John Isner is last American man left

NEW YORK, NY - SEPTEMBER 01: Angelique Kerber of Germany reacts during her women's singles third round match against Dominika Cibulkova of Slovakia on Day Six of the 2018 US Open at the USTA Billie Jean King National Tennis Center on September 1, 2018 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Julian Finney/Getty Images)

It’s happening again: Women’s seeds dropping like flies at US Open

Roger Federer of Switzerland plays against Nick Kyrgios of Australia during Day 6 of the 2018 US Open Men's Singles match at the USTA Billie Jean King National Tennis Center in New York on September 1, 2018. (Photo by TIMOTHY A. CLARY / AFP) (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)

US Open 2018, Day 6: Federer plays match, and hits shot, of tournament

Argentina's Juan Martin del Potro screams after winning the firs set against Spain's Fernando Verdasco during their 2018 US Open men's round 3 match August 31, 2018 in New York. (Photo by Don EMMERT / AFP) (Photo credit should read DON EMMERT/AFP/Getty Images)

US Open Day 5: Serena wins sister battle, Nadal had to fight through five sets

NEW YORK, NY - AUGUST 23: Serena Williams and Venus Williams pose during the 2018 Palace Invitational Badminton Tournament at Lotte New York Palace on August 23, 2018 in New York City. (Photo by Gary Gershoff/WireImage)

US Open Day 3: Williams sisters set up an epic third round matchup

NEW YORK, USA - AUGUST 28: Madison Keys of USA competes against Pauline Parmentier of France during Us Open 2018 tournament in New York, United States on August 28, 2018. (Photo by Mohammed Elshamy/Anadolu Agency/Getty Images)

Madison Keys is inspiring and ready to win at her favorite slam (Interview)

NEW YORK, NY - AUGUST 28: Roger Federer of Switzerland returns the ball during his men's singles first round match against Yoshihito Nishioka of Japan on Day Two of the 2018 US Open at the USTA Billie Jean King National Tennis Center on August 28, 2018 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Pantling/Getty Images)

Federer sails through while other stars survive scares at Day 2 of the U.S. Open

2018 US Open Tennis Tournament- Day One. Simona Halep of Romania in action against Kala Kanepi of Estonia on Louis Armstrong Stadium at the 2018 US Open Tennis Tournament at the USTA Billie Jean King National Tennis Center on August 27th, 2018 in Flushing, Queens, New York City. (Photo by Tim Clayton/Corbis via Getty Images)

Top seed Simona Halep goes out in shocking first round loss at the U.S. Open

MELBOURNE, AUSTRALIA - JANUARY 28: Novak Djokovic of Serbia (R) shakes hands after winning in his semi final match against Roger Federer of Switzerland during day 11 of the 2016 Australian Open at Melbourne Park on January 28, 2016 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images)

Roger Federer and Novak Djokovic renew their rivalry in Cincinnati final

CINCINNATI, OH - AUGUST 14: Serena Williams (USA) reaches for a shot during the Western & Southern Open at the Lindner Family Tennis Center in Mason, Ohio on August 14, 2018. (Photo by Adam Lacy/Icon Sportswire via Getty Images)

Serena Williams still struggling as she enters US Open run, but never count her out in a slam

WASHINGTON, DC - AUGUST 02: Andy Murray of Great Britain celebrates a point against Marius Copil of Romania during Day Six of the Citi Open at the Rock Creek Tennis Center on August 2, 2018 in Washington, DC. (Photo by Mitchell Layton/Getty Images)

Andy Murray’s emotion and fight to get to Citi quarters is everything we love about tennis

NEW YORK, NY - SEPTEMBER 10: Rafael Nadal of Spain poses with the championship trophy during the trophy ceremony after defeating Kevin Anderson of South Africa during their Men's Singles finals match on Day Fourteen during the 2017 US Open at the USTA Billie Jean King National Tennis Center on September 10, 2017 in the Queens borough of New York City. (Photo by Chris Trotman/Getty Images for USTA)

US Open: Rafa wins sweet 16 grand slam title in ruthless fashion

NEW YORK, NY - SEPTEMBER 09: Sloane Stephens of the United States poses with the championship trophy during the trophy presentation after defeating Madison Keys of the United States in the Women's Singles final match on Day Thirteen during the 2017 US Open at the USTA Billie Jean King National Tennis Center on September 9, 2017 in the Queens borough of New York City. (Photo by Chris Trotman/Getty Images for USTA)

US Open Final 2017: Sloane Stephens dominates over friend Madison Keys

NEW YORK, NY - SEPTEMBER 08: Rafael Nadal of Spain reacts against Juan Martin del Potro of Argentina during their Men's Singles Semifinal match on Day Twelve of the 2017 US Open at the USTA Billie Jean King National Tennis Center on September 8, 2017 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Clive Brunskill/Getty Images)

U.S. Open Men’s Final preview: Rafael Nadal seeks 16th career grand slam

Serena Williams of the US smiles during the awards ceremony after her victory against Venus Williams of the US in the women's singles final on day 13 of the Australian Open tennis tournament in Melbourne on January 28, 2017. / AFP / WILLIAM WEST / IMAGE RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE (Photo credit should read WILLIAM WEST/AFP/Getty Images)

Serena Williams showers the all-American ladies finalists Stephens and Keys with love

(FILE PHOTO - Image Numbers 842297904 (L) and 843923598) In this composite image a comparison has been made between 2017 US Open Women's Finalists Sloane Stephens of the United States (L) and Madison Keys of the United States. The final takes place on September 9, 2017. ***LEFT IMAGE*** NEW YORK, NY - SEPTEMBER 03: Sloane Stephens of the United States returns a shot during her women's singles fourth round match against Julia Goerges of Germany on Day Seven of the 2017 US Open at the USTA Billie Jean King National Tennis Center on September 3, 2017 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Matthew Stockman/Getty Images) ***RIGHT IMAGE*** NEW YORK, NY - SEPTEMBER 07: Madison Keys of the United States returns a shot against CoCo Vandeweghe of the United States during her Women's Singles Semifinal match on Day Eleven of the 2017 US Open at the USTA Billie Jean King National Tennis Center on September 7, 2017 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Clive Brunskill/Getty Images)

US Open: good friends in real life, but who has the edge, Sloane Stephens or Madison Keys?

LONDON, ENGLAND - JULY 12: Andy Murray of Great Britain talks during a press conference on day nine of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 12, 2017 in London, England. (Photo by Joe Toth - AELTC Pool/Getty Images)

Andy Murray out for the rest of the year and plans return in early 2018

Venus Williams of USA competes against Petra Kvitova of Czech Republic (not seen) in Women's Singles Quarterfinal tennis match within the 2017 US Open Tennis Championships at Arthur Ashe Stadium in New York, United States on September 5, 2017. (Photo by Foto Olimpik/NurPhoto via Getty Images)

2017 U.S. Open average ticket prices up compared to 2016

NEW YORK, NY - SEPTEMBER 06: Juan Martin del Potro of Argentina celebrates after defeating Roger Federer of Switzerland in their Men's Singles Quarterfinal match on Day Ten of the 2017 US Open at the USTA Billie Jean King National Tennis Center on September 6, 2017 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Al Bello/Getty Images)

US Open: historic Federer-Nadal match at Flushing Meadows denied by del Potro

Venus Williams of USA competes against Petra Kvitova of Czech Republic (not seen) in Women's Singles Quarterfinal tennis match within the 2017 US Open Tennis Championships at Arthur Ashe Stadium in New York, United States on September 5, 2017. (Photo by Foto Olimpik/NurPhoto via Getty Images)

US Open: Fab Four American women give U.S. audiences a patriotic affair

NEW YORK, USA - SEPTEMBER 04: Rafael Nadal of Spain competes against Alexandr Dolgopolov (not seen) of Ukraine in Men's Singles round four tennis match within the 2017 US Open Tennis Championships at Arthur Ashe Stadium in New York, United States on September 04, 2017. (Photo by Mohammed Elshamy/Anadolu Agency/Getty Images)

US Open preview: Federer, Nadal one match away from facing each other

NEW YORK, NY - SEPTEMBER 04: Juan Martin del Potro of Argentina celebrates after defeating Dominic Thiem of Austria in their fourth round Men's Singles match on Day Eight of the 2017 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2017 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Clive Brunskill/Getty Images)

US Open: Juan Martin del Potro completes comeback

NEW YORK, NY - SEPTEMBER 03: Petra Kvitova of the Czech Republic reacts against to Garbine Muguruza of Spain during their fourth round Women's Singles match between on Day Seven of the 2017 US Open at the USTA Billie Jean King National Tennis Center on September 3, 2017 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Clive Brunskill/Getty Images)

U.S. Open: Petra Kvitova’s win is match of the tournament

NEW YORK, NY - SEPTEMBER 03: Maria Sharapova of Russia reacts during her women's singles fourth round match against Anastasija Sevastova of Latvia on Day Seven of the 2017 US Open at the USTA Billie Jean King National Tennis Center on September 3, 2017 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Richard Heathcote/Getty Images)

U.S. Open 2017: Maria Sharapova’s grand slam dream comes to a halt