De los Rios of Paraquay, Huber of South Africa also advance in Thailand
Second seeded Henrieta Nagyova of Slovakia has reached the third round of the women's Volvo Open tennis tournament in Pattaya, Thailand.
Nagyova scored a straight set win over Zsofia Gubacsi of Hungary, 6-2, 6-0. Also advancing was eighth seeded Rossana de los Rios of Paraguay, a straight-set winner over Wynne Prakusya of Indonesia, 6-2, 7-6.
Liezel Huber of South Africa defeated sixth seed Ai Sugiyama of Japan in straight sets, 7-5, 6-2. Hsieh Su-Wei of Taiwan defeated Ukraine's Julia Vakulenko in three sets, 7-5, 1-6, 6-2.