Rafael Nadal and Roger Federer could meet in the last four at Australian Open . Top seed Novak Djokovic and world No . 1 Roger Federer and Rafael Nadal are used to meeting in grand slam finals , but the dominance of Novak Djokovic in 2011 means the two great rivals will feature in the same half of the draw for the first time in seven years at the Australian Open . Andy Murray may also meet in semis . Women 's No . 1 Caroline Wozniacki starts off against Australian Anastasia Rodionova . The 100th edition of the Melbourne grand slam begins on Monday .
Rafael Nadal and Roger Federer could meet in the last four at Australian Open . Top seed Novak Djokovic and world No . 1 Andy Murray may also meet in semis . Women 's No . 1 Caroline Wozniacki starts off against Australian Anastasia Rodionova . The 100th edition of the Melbourne grand slam begins on Monday .