The pair of India's Sania Mirza and Zimbabwe's Cara Black has entered the women's doubles final of the China Open tennis tournament. In the semi-final played in Beijing today, the pair shocked top seeded Italians Sara Errani and Roberta Vinci in straight sets 6-4, 6-4 in one hour and 12 minutes. The Indo-Zimbabwean duo have extended their unbeaten run to eight matches now. Saina and Cara next face the winners of the second semifinal between the pairs of China's Su-Wei Hsieh and Shuai Peng and Vera Dushevina of Russia and Arantxa Parra Santonja of Spain.