Sania Mirza and her Romanian team-mate Horia Tecau today sailed into the Mixed Doubles semi-finals of the Australian Open Tennis tournament.The sixth seeded Indo-Romanian pair defeated the German-Pak combine of Julia Goerges and Aisam-ul-Haq-Qureshi, in straight sets, 6-3, 6-4. In the other quarterfinal, Leander Paes and his Slovakian partner Daniela Hantuchova will take on the Canadian-French team of Daniel Nestor and Kristina Mladenovic.Meanwhile, China's Li Na and Dominica Cibulkova of Slovakia today booked the Women's Singles final two berths. In the semi-finals, while Li Na beat Canadian Eugenie Bouchard 6-2, 6-4, to advance to her third Australian Open final, Cibulkova stunned higher ranked Agnieszka Radwanska of Poland, 6-2, 6-4.In the Men's Singles semi-final, Tomas Berdych will take on Stanslas Wawrinka today. World Number One Rafael Nadal and Swiss Roger Federer will meet in the second semi-final later in the tournament.