The second-seeded Agnieszka Radwanska set up a quarter-final clash with former US Open champion Samanth Stosur at the WTA Southern California Open on Thursday, with a straight-sets win over Daniela Hantuchova.
Poland’s Radwanska, the 2010 runner-up and 2011 champion on the hard courts of Carlsbad, defeated Hantuchova 6-3, 6-3, her sixth victory over the Slovakian in eight career meetings.
She was joined in the quarter-finals of the US Open tuneup event by her younger sister Urszula, a 6-2, 4-6, 6-3 winner over sixth-seeded Serb Jelena Jankovic.
Urszula Radwanska’s victory was just one of the upsets of the day, with wild card Virginie Razzano ousting eighth-seeded Carla Suarez Navarro of Spain 6-1, 6-4.
Razzano next faces third seed Czech Petra Kvitova, a former Wimbledon champion.
From 2-2 in the third set, Radwanska won four of the next five games from former world No. 1 Jankovic as she booked her fourth WTA quarter-final appearance of the season.
Radwanska talked about how her older sister’s success has motivated her.
“When I see she’s winning, I want to do the same,” she said. “I want to be as good as she is. She’s been at the top level for a few years. I’m still getting there. On the court, we are a little bit different. She’s a little bit quiet. I’m more emotional. I hope one day I’ll be in the spot where she is now.”
Another former world No. 1 from Serbia, Ana Ivanovic, made it safely through to the quarters, defeating US qualifier Coco Vandeweghe 7-6 (7/5), 6-3.
In the doubles quarter-finals, Taiwanese player Chan Hao-ching and Slovakia’s Janette Husarova defeated Anna-Lena Groenefeld from Germany and Kveta Peschke of the Czech Republic, 7-5, 6-7 (5), 10-6.
Serbia’s Jelena Jankovic and Katarina Srebotnik of Slovenia defeated India’s Sania Mirza and Flavia Pennetta from Italy 7-6 (2), 6-4 in the other quarter-final played on Thursday.
Additional reporting by staff writer