In Australian Open Tennis, defending champion and world number one Serena Williams today advanced to the third round. She defeated Su-Wei Hsieh, 6-1, 6-2. Maria Sharapova also progressed to the third round beating Aliaksandra Sasnovich 6-2, 6-1.In the Men's Singles, defending champion and world number one Novak Djokovic and Swiss Roger Federer will play their second round matches today. The Indian challenge in the Men's Doubles begins today, as Mahesh Bhupati and Leander Paes, with their teammates, will play their first round matches later in the day.