Novak Djokovic, Rafael Nadal and Roger Federer meet in a $250,000 three-day exhibition tournament in the Gulf's winter sun from today, eager to strike early blows ahead of the 2012 season.

In the new year, World No 1 Djokovic will defend three Grand Slam titles and Nadal will look to hang on to his Olympic title and French Open crown, while Federer, despite nearing his 31st birthday, is keen to extend his impressive late run in 2011 Djokovic won three of the four Grand Slams and five Masters this year and assembled a 70-6 winning record.