Men’s Singles Round 4 matches:
3-Roger Federer (Switzerland) beat 33-Philipp Kohlschreiber (Germany) 6-4 6-2 7-5
Andrey Rublev (Russia) beat 9-David Goffin (Belgium) 7-5 7-6(5) 6-3
1-Rafa Nadal (Spain) beat Alexandr Dolgopolov (Ukraine) 6-2 6-4 6-1
24-Juan Martin del Potro (Argentina) beat 6-Dominic Thiem (Austria) 1-6 2-6 6-1 7-6(1) 6-4
Women’s Singles Round 4:
15-Madison Keys (U.S.) beat 4-Elina Svitolina (Ukraine) 7-6(2) 1-6 6-4
Kaia Kanepi (Estonia) beat Daria Kasatkina (Russia) 6-4 6-4
20-CoCo Vandeweghe (U.S.) beat Lucie Safarova (Czech Republic) 6-4 7-6(2)
1-Karolina Pliskova (Czech Republic) beat Jennifer Brady (U.S.) 6-1 6-0