Roger Federer AFP PHOTOSMurray could have a showdown with top-ranked Australian youngster Bernard Tomic in the fourth round.Rafael Nadal faces a potential rematch of his losing 2014 final against Swiss fourth seed Stan Wawrinka in the other quarterfinals in the bottom half of the draw.Wawrinka is projected to face big-serving Canadian Milos Raonic in the fourth round, while Nadal, who won the Australian title only once in 2009, could take on South African Kevin Anderson in the last 16.Wawrinka, who upset Djokovic in last year’s French Open finals for his second major win, opens against Russia’s Dmitry Tursunov, while Nadal meets Spanish compatriot Fernando Verdasco.Quarterfinals projections in draw orderNovak Djokovic v Kei NishikoriRoger Federer v Tomas BerdychRafael Nadal v Stan WawrinkaDavid Ferrer v Andy MurrayAFP
