Home favourite Li Na overcame Germanys Sabine Lisicki 7-5 6-4 at the China Open on Wednesday to set up a quarter-final showdown with former Wimbledon champion Petra Kvitova.
The Czech,who won the Japan Open last weekend,overcame Italian fifth seed Sara Errani 6-4 6-7(3) 6-3 in their third round clash at the prestigious $5 million Beijing tournament.
World number four Agnieszka Radwanska was one of a number of high profile women to win through in second round action on the hard courts at the National Tennis Centre as the Pole dispatched promising American Madison Keys 6-3 6-2.
Radwanksa will next face Slovenian wildcard Polona Hercog,who stunned former world number one Ana Ivanovic 6-4 6-4 in the days only upset.
It was a big challenge for me to go out there on a big court and play against Ana Ivanovic,and Im just really happy the way it turned out, Hercog told the WTA Tour. Its probably one of the biggest victories for me.
Germanys Andrea Petkovic provided the upset of the first round when she ousted Australian Open winner Victoria Azarenka and the Bosnia-born world number 43 followed that up with a second round win over another grand slam champion on Wednesday.
Petkovic again needed to go the distance as she beat former French and U.S. Open champion Svetlana Kuznetsova 4-6 6-4 6-1. This is the first tournament that Ive been able to really keep up my intensity and keep up my focus. I think Ive played two good matches, Petkovic said after setting up a clash with Czech Lucie Safarova in the third round.
In the mens singels,Rafael Nadal edged past Philipp Kohlschreiber of Germany 6-4,7-6 (3),with Italian Fabio Fognini and American John Isner joining him in the third round. Fognini crushed Lleyton Hewitt 6-0,6-2.
Leander Paes and Sania Mirza moved into the quarterfinals in the mens doubles and womens doubles events respectively. Top seeds Paes and Daniel Nestor eased past Americans John Isner and Sam Querrey 6-2,6-2 in their opening round saving all three break points they faced while breaking their opponents twice in each set.
Sania and Cara Black,the eight seeds,defeated Anastasia Pavlyuchenkova and Lucie Safarova of Czech Republic 6-3,6-2. They now face Chinese Taipeis Yung-Jan Chan and Jie Zheng.
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