Posted: Wed January 2, 2013 9:17AM; Updated: Wed January 2, 2013 9:17AM

Li defeats American Cohen in China

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Li Na
Li Na will play eighth seed Bojana Jovanovski in the quarterfinals.
Liang Xu/ZumaPress.com

SHENZHEN, China (AP) -- Top-seeded Li Na advanced to the Shenzhen Open quarterfinals with a 6-3, 6-4 win over Julia Cohen of the United States in the second round on Wednesday.

The Chinese star overcame five double faults and struggled with her serve during the 94-minute match.

Li will play eighth-seeded Bojana Jovanovski of Serbia.

No. 2-seeded Marion Bartoli also advanced by defeating Swiss qualifier Stefanie Voegele 7-5, 6-4. Bartoli will take on fifth-seeded Klara Zakopalova of the Czech Republic for a place in the semifinals.

China's Zhou Yi-miao, ranked 177, completed the quarterfinals lineup with a 4-6, 6-2, 7-6 (3) win over Taiwan's Chang Kai-chen. Romania's Monica Niculescu, who ousted No. 7-seeded Laura Robson in the first round, will take on Zhou on Thursday.

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