Garbine Muguruza and Ons Jabeur had quick victories to reach the third round of the U.S. Open.
The ninth-seeded Muguruza, a two-time Grand Slam champion, beat Andrea Petkovic 6-4, 6-2. She could next face No. 18 seed Victoria Azarenka, who reached her third U.S. Open final last year.
The 20th-seeded Jabeur routed Maria Camila Osorio Serrano 6-0, 6-1 in 53 minutes.
Defending champion Naomi Osaka was the first player to reach the third round when opponent Olga Danilovic of Serbia withdrew for medical reasons.
