|At Rock Creek Park Tennis Center|
|Purse: ATP, $1.75 million (WT500); WTA, $226,750 (Intl.)|
Yuki Bhambri, India, def. Stefan Kozlov, United States, 7-5, 2-0 retired.
Aryna Sabalenka, Belarus, def. Lauren Davis (3), United States, 7-5, 6-3.
Bianca Andreescu, Canada, def. Camila Giorgi, Italy, 5-7, 6-3, 6-4.
Julia Goerges (4), Germany, def. Francoise Abanda, Canada, 6-4, 6-4.
Lukasz Kubot, Poland, and Marcelo Melo (2), Brazil, def. Robert Lindstedt, Sweden, and Dominic Thiem, Austria, 7-5, 7-5.