New York:The 13th mixed doubles seeds at the US Open, the legendary Martina Navratilova and India's Leander Paes are through to the semifinals. They beat Russia's Maria Sharapova and Byelorussian Max Mirnyi in straight sets 6-4 6-4. They are up against the Australian duo of Alicia Molik and Todd Woodbridge in the semis. Paes and his men's doubles partner had earlier shocked the top seeds Jonas Bjorkman and Todd Woodbridge to reach the quarterfinals. Mahesh Bhupathi is out of both the men's and mixed doubles event at this year's last grand slam.