|At William H.G. FitzGerald Tennis Center|
|Purse: ATP, $1.89 million (WT500); WTA, $226,750 (Intl.)|
Tommy Paul, United States, def. Alex Bolt, Australia, 3-6, 7-6 (0), 6-2.
Frances Tiafoe (13), United States, def. Hubert Hurkacz, Poland, 6-2, 6-4.
James Duckworth, Australia, def. Jason Kubler, Australia, 1-6, 6-2, 7-6 (5).
Marius Copil, Romania, def. Jeremy Chardy (14), France, 6-4, 6-4.
Denis Kudla, United States, def. Karen Khachanov (12), Russia, 6-2, 6-3.
Mischa Zverev (15), Germany, def. Tim Smyczek, United States, 6-2, 7-6 (7).
Zheng Saisai, China, def. Katie Swan, Britain, 6-2, 6-4.
Ysaline Bonaventure, Belgium, def. Anhelina Kalinina, Ukraine, 6-3, 6-3.
Jennifer Brady, United States, def. Natalia Vikhlyantseva, Russia, 6-1, 6-4.
Andrea Petkovic, Germany, def. Sloane Stephens (2), United States, 2-6, 6-4, 6-2.
Denis Kudla, United States, and Frances Tiafoe, United States, def. Jeremy Chardy, France, and Nick Kyrgios, Australia, walkover.
Raven Klaasen, South Africa, and Michael Venus, New Zealand, def. Rajeev Ram, United States, and Jean-Julien Rojer, Netherlands, 7-6 (4), 7-6 (6).
Ivan Dodig, Croatia, and Ben McLachlan, Japan, def. Lukasz Kubot, Poland, and Marcelo Melo (3), Brazil, 6-4, 7-5.
Mike Bryan, United States, and Edouard Roger-Vasselin, France, def. Nikola Mektic, Croatia, and Alexander Peya, Austria, 6-7 (3), 7-6 (5), 10-5.
Juan Sebastian Cabal and Robert Farah, Colombia, def. Henri Kontinen, Finland, and John Peers (2), Australia, 6-4, 6-4.
Ysaline Bonaventure, Belgium, and Fanny Stollar, Hungary, def. Aleksandra Krunic, Serbia, and Zheng Saisai, China, walkover.
Han Xinyun, China, and Darija Jurak (3), Croatia, def. Chen Pei Hsuan and Wu Fang-Hsien, Taiwan, 2-6, 6-1, 10-5.