Also advancing were fourth - seeded Urszula Radwanska and 17 - year - old CiCi Bellis of Atherton in the San Francisco Bay Area .
Fourth - seeded Urszula Radwanska is the younger sister of fourth - ranked Agnieszka Radwanska .
Also advancing were fourth - seeded Urszula Radwanska , the younger sister of fourth - ranked Agnieszka Radwanska , and 17 - year - old CiCi Bellis of Atherton in the San Francisco Bay Area .