Swiss world No. 2 Roger Federer defeated archrival Rafael Nadal in three sets, becoming the final winner of the ATP World Tour Finals on Sunday, Xinhua reported.
It's the fifth time that the 16 Grand Slam titles holder was crowned at the season finale.
Federer, 29, has been in stunning form by winning all three group matches and the semifinal without losing a set. He continued to dominate the court in the O2 Arena by taking the first set 6-3 against world No. 1 Nadal, but was broke in the second set by the Spaniard to concede a set 6-3.
Federer kept his sharpness in the deciding set while the 24-year-old Nadal revealed sign of tiredness as he fought three hours and 11 minutes to send off British top Andy Murray in the semifinal on Saturday.
After breaking twice, Federer won the final set 6-1 so as to become the third player in the tournament's 41-year history to win the title five times, joining Ivan Lendl and Pete Sampras.