Beijing: India’s Sania Mirza and her partner Peng Shuai had to battle hard to seal their place in the semi-finals of the China Open tennis championships.

The third-seeded Indo-Chinese pair of Sania and Peng came from a set down to beat fifth seeded Czech pair of Barbara Strýcová and Katerina Siniaková 4-6 6-2 10-7 in the quarterfinals.

Sania and Peng will now face Swiss Martina Hingis and Chan Yung-jan of Chinese Taipei in the last-four round tomorrow.