Li hit 29 winners to only four for her 100th-ranked opponent. She is in the third round of the U.S. Open for the fifth time
Caroline Wozniacki advanced to the final of the Kremlin Cup on Saturday by beating Sofia Arvidsson of Sweden 6-3, 6-7 (4), 6-4.
Former top-ranked players Ana Ivanovic and Jelena Jankovic of Serbia are quietly into the third round of the U.S. Open with impressive performances so far.
Top-seeded Agnieszka Radwanska of Poland beat Kaia Kanepi of Estonia 7-6, (8) 6-3 on Friday and will play Simona Halep of Romania in the Belgian Open final.
Defending champion Caroline Wozniacki brushed aside a shaky first set to come from behind and beat Sofia Arvidsson 3-6, 7-5, 6-2 in the Indian Wells tennis tournament third round.