Radwanska, Stosur reach quarters


Second-seeded Agnieszka Radwanska set up a quarterfinal clash with former U.S. Open champion Samanth Stosur at the WTA Southern California Open Thursday with a straight-sets win over Daniela Hantuchova.

Poland’s Radwanska, the 2010 runnerup and 2011 champion on the hardcourts of Carlsbad, defeated Hantuchova 6-3, 6-3, her sixth victory over the Slovakian in eight career meetings.

She was joined in the quarterfinals of the $795,707 U.S. Open tuneup event by younger sister Urszula, a 6-2, 4-6, 6-3 winner over sixth-seeded Serbian Jelena Jankovic.

Urszula Radwanska’s victory was just one of the day’s upsets, with French wild card Virginie Razzano ousting eighth-seeded Carla Suarez Navarro of Spain 6-1, 6-4.