Nadia Petrova of Russia shows reacts after losing a point against against compatriot Svetlana Kuznetsova during a semi-final match at the China Open 2009, at the National Tennis Center in Beijing on October 10, 2009. Kuznetsova beat Petrova 6-1, 6-3. AFP PHOTO/PETER PARKS (Photo credit should read PETER PARKS/AFP/Getty Images)

Russian Nadia Petrova (L) recieves treatment during a semi-final match against Svetlana Kuznetsova of Russia at the China Open 2009, at the National Tennis Center in Beijing on October 10, 2009. Kuznetsova beat Petrova 6-1, 6-3. AFP PHOTO/GOH CHAI HIN (Photo credit should read GOH CHAI HIN/AFP/Getty Images)

Russian Nadia Petrova (L) recieves treatment during a semi-final match against Svetlana Kuznetsova of Russia at the China Open 2009, at the National Tennis Center in Beijing on October 10, 2009. Kuznetsova beat Petrova 6-1, 6-3. AFP PHOTO/GOH CHAI HIN (Photo credit should read GOH CHAI HIN/AFP/Getty Images)

BEIJING - OCTOBER 09: Nadia Petrova of Russia returns a shot against Peng Shuai of China in the quarter-finals during day eight of the 2009 China Open at the National Tennis Centre on October 9, 2009 in Beijing, China. (Photo by Feng Li/Getty Images)

BEIJING - OCTOBER 09: Peng Shuai of China misses a shot against Nadia Petrova of Russia in the quarter-finals during day eight of the 2009 China Open at the National Tennis Centre on October 9, 2009 in Beijing, China. (Photo by Feng Li/Getty Images)

BEIJING - OCTOBER 09: Peng Shuai of China returns a shot against Nadia Petrova of Russia in the quarter-finals during day eight of the 2009 China Open at the National Tennis Centre on October 9, 2009 in Beijing, China. (Photo by Feng Li/Getty Images)

BEIJING - OCTOBER 09: Nadia Petrova of Russia returns a shot against Peng Shuai of China in the quarter-finals during day eight of the 2009 China Open at the National Tennis Centre on October 9, 2009 in Beijing, China. (Photo by Feng Li/Getty Images)

BEIJING - OCTOBER 09: Nadia Petrova of Russia serves a shot against Peng Shuai of China in the quarter-finals during day eight of the 2009 China Open at the National Tennis Centre on October 9, 2009 in Beijing, China. (Photo by Feng Li/Getty Images)

BEIJING - OCTOBER 09: Nadia Petrova of Russia returns a shot against Peng Shuai of China in the quarter-finals during day eight of the 2009 China Open at the National Tennis Centre on October 9, 2009 in Beijing, China. (Photo by Feng Li/Getty Images)

BEIJING - OCTOBER 09: Peng Shuai of China returns a shot against Nadia Petrova of Russia in the quarter-finals during day eight of the 2009 China Open at the National Tennis Centre on October 9, 2009 in Beijing, China. (Photo by Feng Li/Getty Images)

Peng Shuai of China hits a return against Nadia Petrova of Russia during a quarter-final match of the China Open 2009, at the National Tennis Center in Beijing on October 9, 2009. Petrova beat Peng 6-7, 6-3, 6-2. AFP PHOTO/GOH CHAI HIN (Photo credit should read GOH CHAI HIN/AFP/Getty Images)

Nadia Petrova of Russia hits a return to Peng Shuai of China during a quarter-final match of the China Open 2009, at the National Tennis Center in Beijing on October 9, 2009. Petrova beat Peng 6-7, 6-3, 6-2. AFP PHOTO/GOH CHAI HIN (Photo credit should read GOH CHAI HIN/AFP/Getty Images)

BEIJING - OCTOBER 09: Nadia Petrova of Russia returns a shot against Peng Shuai of China in the quarter-finals during day eight of the 2009 China Open at the National Tennis Centre on October 9, 2009 in Beijing, China. (Photo by Feng Li/Getty Images)

BEIJING - OCTOBER 09: Nadia Petrova of Russia returns a shot against Peng Shuai of China in the quarter-finals during day eight of the 2009 China Open at the National Tennis Centre on October 9, 2009 in Beijing, China. (Photo by Feng Li/Getty Images)

BEIJING - OCTOBER 09: Nadia Petrova of Russia celebrates winning against Peng Shuai of China in the quarter-finals during day eight of the 2009 China Open at the National Tennis Centre on October 9, 2009 in Beijing, China. (Photo by Feng Li/Getty Images)

Nadia Petrova of Russia celebrates beating Peng Shuai of China during a quarter-final match of the China Open 2009, at the National Tennis Center in Beijing on October 9, 2009. Petrova beat Peng 6-7, 6-3, 6-2. AFP PHOTO/GOH CHAI HIN (Photo credit should read GOH CHAI HIN/AFP/Getty Images)

BEIJING - OCTOBER 09: Nadia Petrova of Russia celebrates winning against Peng Shuai of China in the quarter-finals during day eight of the 2009 China Open at the National Tennis Centre on October 9, 2009 in Beijing, China. (Photo by Feng Li/Getty Images)

Nadia Petrova of Russia celebrates after beating Peng Shuai of China during a quarter-final match of the China Open 2009, at the National Tennis Center in Beijing on October 9, 2009. Petrova beat Peng 6-7, 6-3, 6-2. AFP PHOTO/GOH CHAI HIN (Photo credit should read GOH CHAI HIN/AFP/Getty Images)

Nadia Petrova of Russia hits a return to Peng Shuai of China during a quarter-final match of the China Open 2009, at the National Tennis Center in Beijing on October 9, 2009. Petrova beat Peng 6-7, 6-3, 6-2. AFP PHOTO/FREDERIC.J BROWN (Photo credit should read FREDERIC BROWN/AFP/Getty Images)

Nadia Petrova of Russia waves to her fans after beating Peng Shuai of China during a quarter-final match of the China Open 2009, at the National Tennis Center in Beijing on October 9, 2009. Petrova beat Peng 6-7, 6-3, 6-2. AFP PHOTO/FREDERIC.J BROWN (Photo credit should read FREDERIC BROWN/AFP/Getty Images)

Nadia Petrova of Russia hits a return to Peng Shuai of China during a quarter-final match of the China Open 2009, at the National Tennis Center in Beijing on October 9, 2009. Petrova beat Peng 6-7, 6-3, 6-2. AFP PHOTO/FREDERIC.J BROWN (Photo credit should read FREDERIC BROWN/AFP/Getty Images)

Nadia Petrova of Russia celebrates after beating Peng Shuai of China during a quarter-final match of the China Open 2009, at the National Tennis Center in Beijing on October 9, 2009. Petrova beat Peng 6-7, 6-3, 6-2. AFP PHOTO/FREDERIC.J BROWN (Photo credit should read FREDERIC BROWN/AFP/Getty Images)

Peng Shuai of China returns a shot to Nadia Petrova of Russia during a quarter-final match of the China Open 2009, at the National Tennis Center in Beijing on October 9, 2009. AFP PHOTO/FREDERIC.J BROWN (Photo credit should read FREDERIC BROWN/AFP/Getty Images)

Nadia Petrova of Russia returns a shot to Peng Shuai of China during a quarter-final match of the China Open 2009, at the National Tennis Center in Beijing on October 9, 2009. AFP PHOTO/FREDERIC.J BROWN (Photo credit should read FREDERIC BROWN/AFP/Getty Images)

Peng Shuai of China reacts after winning a point against Nadia Petrova of Russia during a quarter-final match of the China Open 2009, at the National Tennis Center in Beijing on October 9, 2009. AFP PHOTO/FREDERIC.J BROWN (Photo credit should read FREDERIC BROWN/AFP/Getty Images)

Peng Shuai of China hits a return to Nadia Petrova of Russia during a quarter-final match of the China Open 2009, at the National Tennis Center in Beijing on October 9, 2009. AFP PHOTO/FREDERIC.J BROWN (Photo credit should read FREDERIC BROWN/AFP/Getty Images)

Peng Shuai of China hits a return to Nadia Petrova of Russia during a quarter-final match of the China Open 2009, at the National Tennis Center in Beijing on October 9, 2009. AFP PHOTO/FREDERIC.J BROWN (Photo credit should read FREDERIC BROWN/AFP/Getty Images)

Peng Shuai of China hits a return against Nadia Petrova of Russia during a quarter-final match of the China Open 2009, at the National Tennis Center in Beijing on October 9, 2009. AFP PHOTO/FREDERIC.J BROWN (Photo credit should read FREDERIC BROWN/AFP/Getty Images)

Nadia Petrova of Russia hits a return to Peng Shuai of China during a quarter-final match of the China Open 2009, at the National Tennis Center in Beijing on October 9, 2009. AFP PHOTO/FREDERIC.J BROWN (Photo credit should read FREDERIC BROWN/AFP/Getty Images)

Peng Shuai of China returns a shot against Nadia Petrova of Russia during a quarter-final match of the China Open 2009, at the National Tennis Center in Beijing on October 9, 2009. AFP PHOTO/FREDERIC.J BROWN (Photo credit should read FREDERIC BROWN/AFP/Getty Images)