On the other side of the draw, seventh-seeded Dinara Safina overcame 12 double-faults to upend fourth-seeded fellow Russian Svetlana Kuznetsova 2-6, 6-3, 6-2.
In the semis Safina will face Victoria Azarenka of Belarus, a 6-4, 7-5 winner over unseeded 17-year-old Tamira Paszek of Austria.
■NORDIC LIGHT OPEN
AP, STOCKHOLM
Defending champion Agnieszka Radwanska advanced to the semi-finals of the Nordic Light Open on Friday when Camille Pin retired in the second set.
The Pole led 6-2, 1-0 when Pin gave up because of stomach problems.
Radwanska will play fourth-seeded Caroline Wozniacki of Denmark in the semis. Wozniacki ousted fifth-seeded Anabel Medina Garrigues of Spain 6-1, 6-3 in the final quarter-final.
Third-seeded Katarina Srebotnik of the Czech Republic and last year’s finalist Vera Dushevina of Russia also had straight-set wins and will meet in the other semi-final.
Srebotnik, ranked 29th, downed Virginia Ruano Pascual of Spain 6-2, 6-0 and Dushevina beat Iveta Benesova of the Czech Republic 6-3, 6-3.
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