In the Australian Open Tennis tournament at Melbourne, India's Sania Mirza and her Russian partner Elena Vesnina advanced to the semi finals of the women's doubles. The sixth seeded pair defeated the American duo of Liezel Huber and Lisa Raymond 6-3, 5-7, 7-6. Swiss star, Roger Federer has also booked a semi final berth in the men's singles by defeating Argentinean Juan Martin Del Potro 6-4, 6-3, 6-2.<br/><br/>In Women's Singles, third seeded Victoria Azarenka of Belarus advanced to the semi finals beating Agnieszka Radwanska of Poland 6-7, 6-0, 6-2. In another quarter final match, Belgian Kim Clijsters defeated Caroline Wozniacki of Denmark 6-3, 7-6.