With Novak Djokovic and Serena Williams playing Thursday, both the men's and women's top seeds will be in action on the same day for the first time in the tournament.
Later in the day, Andy Murray will continue to try to bounce back from his quarterfinal loss at Wimbledon, while Eugenie Bouchard looks to take another step toward making her fourth consecutive Grand Slam semifinal.
|TIme (et)||network||live stream|
|11 a.m. - 7 p.m.||Tennis Channel||Tennis Channel Live|
|1 p.m. - 6 p.m.||ESPN||US Open Live, WatchESPN|
|6 p.m. - 11 p.m.||ESPN2||US Open Live, WatchESPN|
|ARTHUR ASHE STADIUM (DAY SESSION)||ROund||time (ET)|
|Christina McHale vs. Victoria Azarenka (16)||Second||11 a.m.|
|Serena Williams (1) vs. Vania King||Second||Not before 1 p.m.|
|Novak Djokovic (1) vs. Paul-Henri Mathieu||Second||Following|
|LOUIS ARMSTRONG STADIUM||round||time (et)|
|Karolina Pliskova vs. Ana Ivanovic (8)||Second||11 a.m.|
|Jan-Lennard Struff vs. John Isner (13)||Second||Following|
|Aleksandra Krunic vs. Madison Keys (27)||Second||Following|
|Peter Gojowczyk vs. Milos Raonic (5)||Second||Not before 5 p.m.|
|ARTHUR ASHE STADIUM (NIGHT SESSION)||Round||time (ET)|
|Matthias Bachinger vs. Andy Murray (8)||Second||7 p.m.|
|Sorana Cirstea vs. Eugenie Bouchard (7)||Second||Yes|
|select other matches||round||time (et)|
|Petra Kvitova (3) vs. Petra Cetkovska||Second||Follows two matches|
|Jo-Wilfried Tsonga (9) vs. Aleksandr Nedovyesov||Second||Follows 11 a.m. match|
|Kei Nishikori (10) vs. Pablo Andujar||Second||11 a.m.|
|Flavia Pennetta (11) vs. Shelby Rogers||Second||11 a.m.|
|Coco Vandeweghe vs. Carla Suarez Navarro (15)||Second||Follows two matches|
|Simone Bolelli vs. Tommy Robredo (16)||Second||Follows two matches|
USTA has the full list of Day 4 matches here.
Matches to watch:
Novak Djokovic (1) vs. Paul-Henri Mathieu
Djokovic, who is the No. 1 seed in the men's draw of the tournament, defeated Argentine Diego Schwartzman in his first match of the tournament in straight sets. Djokovic lost in the final of the 2013 U.S. Open to Rafael Nadal.
Mathieu defeated Gilles Muller on the tournament's opening day. He is ranked 77th in the world.
Serena Williams (1) vs. Vania King
Williams knocked off fellow American Taylor Townsend in her first match of the tournament (6-3, 6-1). Williams has won a tour-leading four titles in 2014.
King defeated Francesca Schiavone in her first match. In 2010, she won the Wimbledon women's doubles championship playing with Yaroslava Shvedova.
Matthias Bachinger vs. Andy Murray (8)
Murray won the U.S. Open in 2012 and lost in the semifinals last year. This season, he reached the semifinal in the French Open and lost to Grigor Dimitrov in the Wimbledon quarterfinals, marking the first time since 2008 he failed to make it to the event's semifinals.
Bachinger beat Radek Stepanek to reach the second round. He is the 235th-ranked player in the world and has reached only one final in his ATP career, the doubles final at the Atlanta Tennis Championship, where he and Frank Moser lost.
Sorana Cirstea vs. Eugenie Bouchard (7)
Bouchard, currently ranked eighth in the world, defeated Olga Govortsova 6-2, 6-1 in her first match of the tournament. Bouchard is looking to reach her fourth Grand Slam semifinal this season. At Wimbledon, she became the first Canadian woman to make it to the singles final of a Grand Slam event.
Cirstea beat Heather Watson 6-1, 6-1 in her first match. She's reached two quarterfinals in 2014, at Dubai and at the PTT Pattaya Open.