At The USTA Billie Jean King National Tennis Center
Purse: $22.7 million (Grand Slam)
Denis Kudla (10), United States, def. Agustin Velotti (8), Argentina, 6-3, 6-2.
Yulia Putintseva, Russia, def. Ons Jabeur, Tunisia, 6-4, 6-3.
Timea Babos, Hungary, and Sloane Stephens (3), United States, def. An-Sophie Mestach, Belgium, and Silvia Njiric, Croatia, walkover.
Johan Andersson, Sweden, def. Nicholas Taylor, United States, 6-3, 6-7 (4), 6-3.
Peter Norfolk, Britain, def. David Wagner, United States, 6-4, 5-7, 7-6 (6).