World No. 1 Rafael Nadal defeated six-time champion Roger Federer in straight sets in the semifinal of the ATP World Tour Finals here Sunday.
Nadal, who reached final at the season-end event in 2010, took just one hour and 19 minutes for the 7-5, 6-3 victory, Xinhua reported.
The Spaniard will face either second seed Novak Djokovic or Swiss Stanislas Wawrinka in the finals to take place Monday.