Leander Paes of India and his partner Daniel Nester have entered the men's doubles semifinals of the China Open Tennis championship. At Beijing the duo beat D. Marreto and F. Verdasco 7-6 , 6-3 in the quarterfinals.Meanwhile Sania Mirza alongwith Cara Black entered the semifinals of the women's doubles of the championships. They beat their Chinese opponents Y. Chan and J. Zheng 6-4 , 6-1 in the Quarterfinals.