The world's top two tennis players, Roger Federer and Rafael Nadal, plan to open the 2010 season in an exhibition tournament in Abu Dhabi.
Organisers said on Tuesday that the 28-year-old Swiss and his 23-year-old Spanish rival had committed to play in the three-day event starting on December 31.
The six-player tournament, which is not part of the ATP Tour, offers a winner-takes-all prize of $250,000 (SFr255,000).
Britain's Andy Murray, currently ranked third in the world, won the inaugural event last year, beating both Federer and Nadal.
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