Rafael Nadal and Roger Federer will headline the 32-man draw at the Qatar ExxonMobil Open in the first week of the 2011 season.
The world number 1 and his archi rival will be joined by Nikolay Davydenko, the defending champion.
In last year final, the Russian beat Nadal but then struggled through the remainder of 2010 due to a wrist injury he suffered in February.
Jo-Wilfried Tsonga will make his debut at the ATP World Tour 250 hard-court tennis tournament, hoping to be fully fit after the second half of his 2010 campaign was marred by a knee injury.
