Australian Open 2018: Roger Federer faces Aljaz Bedene in opener, Rafael Nadal to take on Victor Estrella Burgos

File image of Roger Federer. AP[/caption]World No 1 and top seed Rafael Nadal starts his Australian campaign against the 83rd-ranked Victor Estrella Burgos of the Dominican Republic in the top quarter of the draw.Nadal withdrew from his first tour event of 2018, in Brisbane, with continuing knee problems, and has been getting in match practice in a Melbourne exhibition event this week ahead of Monday's start to the Open.Nadal could face World No 6 Marin Cilic of Croatia in the quarter-finals.Six-time Australian Open champion Novak Djokovic, seeded 14th for this year's tournament, has a couple of potential early obstacles with American Donald Young and potentially mercurial Frenchman Gael Monfils in the second round.Twelve-time Grand Slam winner Djokovic has been sidelined since Wimbledon in July because of a right elbow injury, but beat World No 5 Dominic Thiem in straight sets in the Kooyong Classic this week.Thiem is projected to face rising young German star Alexander Zverev in the quarters of Djokovic's section of the draw.Former Australian winner Stan Wawrinka, who hasn't played since Wimbledon after knee surgery, is the same section of the draw and faces Lithuania's Ricardas Berankis first up.World No 3 Grigor Dimitrov faces a qualifier first up and could face American Jack Sock in the quarters.Tempestuous Australian 17th seed Nick Kyrgios, is in the same section of the draw and faces Brazil's 100th-ranked Rogerio Dutra Silva.