David Ferrer stunned fellow Spaniard Rafael Nadal in straight sets on Friday to set up a final showdown with world number one Novak Djokovic at the 250,000-dollar three-day exhibition tournament here.

Ferrer took advantage of a below-par Nadal, winning 6-3, 6-2, after Djokovic had earlier demolished Swiss Roger Federer 6-2,6-1 at the Mubadala World Tennis Championship.

Two-time defending champion Nadal blamed a shoulder injury as the world number two trailed from the outset going 5-0 down in the first set.

"I was not in my best condition. I had a little trouble with my shoulder in the last month, but David was fantastic," said Nadal.

"Rafael has not been able to practice much because of his shoulder," said Ferrer.

"But I played very consistent and was happy with my match."

Earlier Djokovic showed no signs of the back and shoulder injuries which hampered his final months of last season as he took just 44 minutes to dispatch world number three Federer.