Top seeded Indo-Swiss pair of Sania Mirza and Martina Hingis has entered the semifinals of Cincinnati Open Tennis Tournament. The duo outplayed the American wild cards Christina Mchale and CoCo Vandeweghe 6-4 6-1. They will now fight it out with Taipei pair of Hao-Ching Chan and Yung-Jan Chan for a place in the final.Sania Mirza is the only Indian left competing in the WTA Premier tournament. Leander Paes and Rohan Bopanna were ousted from the men's doubles with their respective partners.