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Sara Errani edges Shuai Peng in 2 tiebreakers to advance to quarterfinals at Family Circle Cup

  • Sara Errani, of Italy, returns to Peng Shuai, of China, during the Family Circle Cup tennis tournament in Charleston, S.C., Thursday, April 3, 2014. (AP Photo/Mic Smith)

    Sara Errani, of Italy, returns to Peng Shuai, of China, during the Family Circle Cup tennis tournament in Charleston, S.C., Thursday, April 3, 2014. (AP Photo/Mic Smith)  (The Associated Press)

  • Peng Shuai, of China, returns to Sara Errani, of Italy, during the Family Circle Cup tennis tournament in Charleston, S.C., Thursday, April 3, 2014. (AP Photo/Mic Smith)

    Peng Shuai, of China, returns to Sara Errani, of Italy, during the Family Circle Cup tennis tournament in Charleston, S.C., Thursday, April 3, 2014. (AP Photo/Mic Smith)  (The Associated Press)

  • Daniela Hantuchova, of Slovakia, returns to Teliana Pereira, of Brazil, during a match at the Family Circle Cup tennis tournament in Charleston, S.C., Thursday, April 3, 2014. (AP Photo/Mic Smith)

    Daniela Hantuchova, of Slovakia, returns to Teliana Pereira, of Brazil, during a match at the Family Circle Cup tennis tournament in Charleston, S.C., Thursday, April 3, 2014. (AP Photo/Mic Smith)  (The Associated Press)

Sara Errani rallied to defeat Shuai Peng 7-6 (6), 7-6 (5) and advance to the Family Circle Cup quarterfinals.

The 11th-ranked Errani had lost her past three matches to China's Peng and appeared in trouble Thursday after trailing 6-5 in each set. Errani squandered three match points in the second-set tiebreaker until she placed a drop shot that Peng could not track down to finish it.

Daniela Hantuchova won a third-round match over Teliana Pereira in straight sets.

No. 2-seeded Jelena Jankovic, seventh-seeded Sam Stosur and 11th-seeded Venus Williams will play for spots in the quarterfinals later Thursday.

Two-time defending champion Serena Williams lost her opening match on Tuesday night.