On day 5 of Australian Open tennis tournament today, Swiss maestro Roger Federer will play the man long touted as his look-alike successor, Grigor Dimitrov in the third round match this morning. Top seeded Novak Djokovic of Serbia and Serena Williams of USA will also be seen in action in their respective third round matches later in the day. Among other those taking the court in Men's Singles are sixth seed Tomas Berdych, seventh-seed Kei Nishikori and ninth- seed Jo-Wilfried Tsonga. While in women's singles, apart from Serena, Russian Maria Sharapova (5th seed) and Polish Agnieszka Radwanska (4th seed) will also be seen in action today. In round 2 of Men's Doubles, Indo- Luxembourg pair of Mahesh Bhupathi and Gilles Muller will face tough competition against the third-seeded Bob and Mike Bryan brothers of USA. While fourth seeded duo of Rohan Bopanna partnering with Romanian Florin Mergea will be up against Czeck pair Lukas Dlouhy and Jiri Vesely. In Mixed doubles, Leander Paes and Martina Hingis pair will start their campaign today against the duo of British Dominic Inglot and Russian Anastasia Pavlyuchenkova.