Brussels, Belgium (Sports Network) - World No. 3 Agnieszka Radwanska and her qualifier younger sister Urszula Radwanska were a pair of second-round winners Wednesday at the $637,000 Brussels Open, a final clay-court French Open tuneup.

The top-seeded Agnieszka Radwanska destroyed Ukrainian lucky-loser Lesia Tsurenko 6-1, 6-0 in 56 minutes, while an unseeded Urszula stunned second- seeded former Wimbledon runner-up Marion Bartoli of France 6-4, 6-2 at Royal Primerose Tennis Club.

The 23-year-old Agnieszka will face Belgian wild card Alison Van Uytvanck on Thursday, while the 21-year-old Urszula's quarterfinal opponent will be veteran Swede Sofia Arvidsson.

Meanwhile, fourth-seeded diminutive Slovak Dominika Cibulkova drove out Belgian crowd favorite Yanina Wickmayer 6-3, 6-4, while eighth-seeded Estonian Kaia Kanepi clobbered Serbian lucky-loser Bojana Jovanovski 6-2, 6-2.

A mild upset came when Bulgarian Tsvetana Pironkova knocked out 10th-seeded Russian Nadia Petrova 6-3, 6-2.

Other second-round results saw Arvidsson best Dutch qualifier Arantxa Rus 6-2, 3-1, retired, Simona Halep subdue fellow Romanian Monica Niculescu 6-1, 6-1, and the upstart Van Uytvanck douse South African Chanelle Scheepers 4-6, 6-4, 6-2. Rus gave way to a back injury on Day 3.

Thursday's other quarters will pit Cibulkova against Halep and Kanepi versus Pironkova.

The 2012 Brussels champion will collect $107,000.

The Sports Network