Zheng, 22, is aiming for her sixth career title in the WTA 1000 hardcourt event. China's Bu Yunchaokete exited the men's tournament when he fell 6-4, 6-4 to Australian 10th seed Alex de Minaur.

World No. 69 Bu will meet Australian 10th seed Alex de Minaur in the next round. Meanwhile, ninth seed Zheng Qinwen of China progressed in the women's event with a 6-1, 7-5 victory over America's ...

World No. 69 Bu will meet Australian 10th seed Alex de Minaur in the next round. Meanwhile, ninth seed Zheng Qinwen of China progressed in the women's event with a 6-1, 7-5 victory over America's ...