India's Sania Mirza and her Spanish partner Nuria Llagostera Vives will lock horns with the Russian pair of Ekaterina Makarova and Elena Vesnina in the Women's Doubles title clash of the China Open Tennis tournament in Beijing today. In the semi-finals on Friday, the fifth seeded Indo-Spanish duo defeated the Chinese-Slovenian combination of Jie Zheng and Katarina Srebotnik in straight sets 7-5, 6-1.The semi-final matches of the Men's and Women's Singles will also be played today. In the Men's Singles semi-finals, top seeded Serbia's Novak Djokovic will take on Florian Mayer of Germany, while Frechman Jo-Wilfried Tsonga will meet Feliciano Lopez of Spain. In the Women's Singles last four, World Number One Victoria Azarenka of Belarus will clash with Marion Bartoli of France, while Russian Maria Sharapova will play Na Li of China.