The 3rd-ranked Wozniacki was broken five times in the first set, where only one of the games went with serve. But the third-ranked Dane then found her stride and held serve the rest of the way, adding two breaks in the second set and three in the third.
Wozniacki will face fifth-seeded Julia Goerges of Germany for a spot in the semifinals.
Story continues below ↓advertisement | your ad hereIn other second-round matches, Slovakia's Polana Hercog rallied to beat Britain's Anne Keothavong 4-6, 6-0, 6-4, Anna Chakvetadze ousted fellow Russian Anna Lapushchenkova 6-3, 6-4 and Sorona Cirstea of Romania overcame Slovenia's Katarina Srebotnik 7-5, 4-6, 6-2.
© 2010 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.Rafael open to Prem switchDolgopolov, Chela reach 2nd round at Croatia Open