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.<br/><br/>The sixth seeded pair defeated the American duo of Liezel Huber and Lisa Raymond 6-3, 5-7, 7-6. <br/><br/>Meanwhile, the Men's quarter final match between Swiss star Roger Federer and Argentinean Juan Martin Del Potro is underway. Top seeds like Rafael Nadal, Caroline Wozniacki and Victoria Azarenka will also play their Singles quarterfinal matches today. In Men's Singles, Spain's second seed Rafael Nadal will take on Tomas Berdych of Czechoslovakia. <br/><br/>In Women's Singles, third seeded Victoria Azarenka of Belarus have advanced to the semi finals beating Agnieszka Radwanska of Poland 6-7, 6-0, 6-2.<br/><br/>The quarter final match is underway between top seed Caroline Wozniacki of Denmark and Kim Clijsters of Belgium.<br/><br/>In the Junior Girls Doubles category, the Indian-Indonesian tandem of Rutuja Bhosale and Aldila Sutjiadin will play their pre-quarterfinal match against the Aussie pair of Naiktha Bains and Danielle Wagland today.<br/><br/>