Caroline Wozniacki reached the third round in New York by beating former champion Svetlana Kuznetsova.
Caroline Wozniacki reached the third round in New York by beating former champion Svetlana Kuznetsova.
Andy Lyons/Getty Images North America/Getty Images
Kuznetsova, who downed the former No. 1 at Wimbledon, blew a 4-0 lead and lost 6-4 6-4.
Kuznetsova, who downed the former No. 1 at Wimbledon, blew a 4-0 lead and lost 6-4 6-4.
Andy Lyons/Getty Images North America/Getty Images
Britain's Johanna Konta, ranked 14th, needed treatment after dropping to the court. Steamy conditions seemingly took their toll but Konta ended up beating Tsvetana Pironkova 6-2 5-7 6-2.
Britain's Johanna Konta, ranked 14th, needed treatment after dropping to the court. Steamy conditions seemingly took their toll but Konta ended up beating Tsvetana Pironkova 6-2 5-7 6-2.
Mike Hewitt/Getty Images North America/Getty Images
Former Australian Open finalist Dominika Cibulkova was floored, too, by a hamstring issue but also won against Evgeniya Rodina 6-7 (5-7) 6-2 6-2.
Former Australian Open finalist Dominika Cibulkova was floored, too, by a hamstring issue but also won against Evgeniya Rodina 6-7 (5-7) 6-2 6-2.
TIMOTHY A. CLARY/AFP/AFP/Getty Images
Novak Djokovic, the world No. 1 and defending champion, advanced without hitting a ball when Jiri Vesely withdrew with a forearm injury.
Novak Djokovic, the world No. 1 and defending champion, advanced without hitting a ball when Jiri Vesely withdrew with a forearm injury.
Al Bello/Getty Images North America/Getty Images
Jo-Wilfried Tsonga, who has played in the semifinals at every major except the U.S. Open, needed four sets to see off James Duckworth 6-4 3-6 6-3 6-4.
Jo-Wilfried Tsonga, who has played in the semifinals at every major except the U.S. Open, needed four sets to see off James Duckworth 6-4 3-6 6-3 6-4.
Al Bello/Getty Images North America/Getty Images
Top American male John Isner played five sets in the first round and went four against Steve Darcis on Wednesday. He squandered match points in the third before recovering, 6-3 6-4 6-7 (12-10) 6-3.
Top American male John Isner played five sets in the first round and went four against Steve Darcis on Wednesday. He squandered match points in the third before recovering, 6-3 6-4 6-7 (12-10) 6-3.
Joe Scarnici/Getty Images North America/Getty Images
Petra Kvitova, the twice Wimbledon champion, defeated Cagla Buyukakcay 7-6 (7-3) 6-3.
Petra Kvitova, the twice Wimbledon champion, defeated Cagla Buyukakcay 7-6 (7-3) 6-3.
Andy Lyons/Getty Images North America/Getty Images
Last year's finalist, Roberta Vinci, moved into the third round by getting past Christina McHale 6-1 6-3.
Last year's finalist, Roberta Vinci, moved into the third round by getting past Christina McHale 6-1 6-3.
Elsa/Getty Images North America/Getty Images