World No.1 Dinara Safina kicked off her China Open campaign with a 64 64 win over tricky Italian Roberta Vinci.
Venus Williams fell to Anastasia Pavlyuchenkova, 36 61 64, the second straight week she has lost to the young Russian.
Dinara Safina's emotions showed during her second round loss to Zhang Shuai, even during her on-court coaching time-out.
No.226 Zhang Shuai became the lowest-ranked player ever to beat a reigning No.1 by beating Dinara Safina.
By virtue of winning her second round match, Serena Williams assured herself of a return to the No.1 ranking.
Maria Sharapova rallied from 2-5 in the third set to beat Victoria Azarenka in a marathon, 63 67(5) 75.
Alona Bondarenko had been 3-1 against Svetlana Kuznetsova coming in but fell to 3-2 with a 63 46 60 loss.
Svetlana Kuznetsova was understandably pumped after beating Alona Bondarenko to reach the quarterfinals.
Maria Sharapova ran out of gas during a 62 64 third round upset loss to Chinese rising star Peng Shuai.
With her home crowd behind her, Peng Shuai stunned Maria Sharapova in the third round in straight sets.
Serena Williams continued to go winless in non-majors this year with a third round loss to Nadia Petrova.
Marion Bartoli reached her ninth quarterfinal of the year with a 61 64 win over giant-killer Zhang Shuai of China.
Nadia Petrova had only beaten Serena Williams once in seven prior meetings but struck a second time in Beijing.
Nadia Petrova rejoiced after another three set win in the quarterfinals, this time over Peng Shuai.
Agnieszka Radwanska continued her mastery over Marion Bartoli in the semis, improving to 4-0 against her.
Hsieh Su-Wei and Peng Shuai won their third Premier-level doubles title of the year on Saturday night.
Svetlana Kuznetsova ruined Agnieszka Radwanska's perfect finals record with a 62 64 championship win Sunday.
Agnieszka Radwanska held up her first ever runner-up trophy in her Sony Ericsson WTA Tour career.
Agnieszka Radwanska and Svetlana Kuznetsova held their trophies after Sunday night's singles final.
Svetlana Kuznetsova held up her third Sony Ericsson WTA Tour singles trophy of a strong 2009 season.