In a double delight for Indian fans, veteran tennis star Leander Paes and Sania Mirza have stormed into the finals of the US Open mixed Doubles and women's doubles with common partner Martina Hingis. In the Mixed Doubles final, the Indo-Swiss pair of Paes and Hingis will face the US duo of Bethanie Mattek-Sands and Sam Querrey. In the Women's Doubles final, the opponents for the top-seeded pair of Sania Mirza and Martin Hingis will be decided when the second semi-final between the combinations of Casey Dellacqua and Yaroslava Shvedova and Anna-Lena Groenefeld-Coco Vandeweghe is played tonight.Meanwhile, the two Women's Singles semi-finals are slated for tonight. World number one and defending champion Serena Williams will take on Italy's Roberta Vinci in the first match. The second semi-final will feature Italian Flavia Pennetta and Simona Halep of Romania.