At the Australian Open Tennis in Melbourne today, Sania Mirza eased into the second round of Women's Doubles along with her Swiss partner Martina Hingis. The pair defeated the unseeded Colombian-Brazilian duo of Mariana Duque-Marino and Teliana Pereira 6-2, 6-3 in the opening round. With that, Sania and Hingis stretched their winning streak to 31 matches. The Indo-Swiss pair has been on a roll after clinching its 11th straight WTA title at the Sydney International last week.In the Men's Doubles, Rohan Bopanna combined well with Romanian partner Florin Mergea to outplay the Australian duo of Omar Jasika and Nick Kyrgios 7-5, 6-3 to reach the second round. Indian veteran Mahesh Bhupathi has already booked his second-round berth along with partner Gilles Muller. Leander Paes bowed out after a first-round loss alongside French partner Jeremy Charady yesterday.