Simona Halep got a head start of Saturday's play at the U.S. Open, one of several top-10 seeds in action at Flushing Meadows.
Due on court later: Venus Williams, seeded sixth; Agnieszka Radwańska, fourth; and top seed Serena Williams.
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Halep dominated Timea Babos 6-1 in their opening set. However, Babos recovered in the second set at 6-2 and forced a third. Victory over Babos, seeded 31st, would put Halep into the fourth round and the Open's second week of competition.
Serena was scheduled to follow Halep on the Open's main court, Arthur Ashe Stadium, about 1 p.m. ET. Venus had the first match of the evening session about 6 p.m. against No. 26 Laura Siegemund of Germany.
In Saturday's first completed match, Spain's Carla Suárez Navarro, seeded 11th, knocked out No 19 Elena Vesnina of Russia.
American Varvara Lepchenko also was in action on Saturday.
Men's seeds in Saturday matches included No. 2 Andy Murray; notorious bad boy Nick Kyrgios, No. 14; No. 3 Stan Warwinka; and No. 11 David Ferrer, who faced a difficult opponent in resurgent Juan del Potro.
Here is the women's schedule for Sept. 3.