Mahesh Bhupathi and his Austrian teammate Jurgen Melzer today crashed out of the Australian Open Tennis tournament, the first Grand Slam of the season. In the Men's Doubles first round, the Indo-Austrian pair lost to the Argentine team of Diego Schwartzman and Horacio Zeballos, in straight sets, 4-6, 3-6.Rohan Bopanna and his Canadian teammate Daniel Nestor will play their first round match later today.In the Singles, world number one Serena Williams, her sister Venus Williams and Agnieszka Radwanksa of Poland progressed to the third round. While Serena defeated Russia's Vera Zvonareva, 7-5, 6-0, Venus beat fellow American Lauren Davis, 6-2, 6-3. Radwanska eased past Johanna Larsson of Sweden, 6-0, 6-1.