In other first-round games, seventh-seeded Nina Stojanovic of Serbia knocked out Vitalia Diatchenko of Russia 6-7 (5), 6-1, 6-3 while ninth-seeded Greet Minnen of Belgium defeated Giulia Gatto-Monticone of Italy 6-0, 4-6, 6-1.
Former U.S. Open champion Sam Stosur of Australia recorded her sixth straight loss. She was eliminated by American Grace Min 6-3, 2-6, 6-3.
Another American, qualifier Asia Muhammad, rallied to overcome Lizette Cabrera of Australia 3-6, 6-2, 6-2.
More AP tennis: https://apnews.com/hub/tennis and https://twitter.com/AP_Sports