Sania Mirza and Brazil's Bruno Soares have progressed to the semi-finals in the Australian Open. The Sania-Soares duo had an easy outing against the unseeded Australian pair of Casey Dellacqua and John Peers, beating them 6-2, 6-2 in the quarterfinals. Sania and Soares had won the US Open title last year. Sania is eyeing her fourth Grand Slam mixed doubles title and the second one at Melbourne. In the women's singles, top-seed Serena Williams got the better of Dominika Cibulkova 6-2, 6-2 to advance to the semifinals. Serena now meets unseeded US teenager Madison Keys. Keys had defeated the other Williams Sister – Venus, in the quarter-finals. Serena Williams has reached the semi-finals of the Australian Open on five previous occasions and has won the title each time.