Nadal and Federer are joined in Group B by Jo-Wilfried Tsonga, who will be making his second appearance, and debutant Mardy Fish.

与费纳同在B组的还有第二次参加年终总决赛的特松加和初次露面的费什。

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The No. 6 seed Jo-Wilfried Tsonga, from France, triumphed 7-6 6-2 over Russia's Nikolay Davydenko.

CNN: Djokovic fit to take part in Monte Carlo

Wawrinka replaced Jo-Wilfried Tsonga in the field after the Frenchman pulled out with a wrist injury.

CNN: Nadal begins 2010 with Abu Dhabi title

Spain's Feliciano Lopez will play third seed Jo-Wilfried Tsonga of France in the other semifinal Saturday.

CNN: Murray and Djokovic reach semifinals in Beijing and Tokyo