(CNN) -- Rightly billed as a clash of tennis titans, World No.1 versus World No.2, few were expecting the comprehensive manner of Novak Djokovic's defeat of Rafael Nadal to retain the ATP World Tour Finals title Monday night in London. Nadal will still end the year as the top ranked player in the world, but he was given a timely reminder that on the fast indoor surface of the 02 Arena, Djokovic reigns supreme, retaining his title with a 6-3 6-4 victory. It came after just one hour 36 minutes on his third championship point, with Nadal putting a forehand wide, rounding off an uncharacteristically tame display from the Spaniard.
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Novak Djokovic wins ATP World Tour Finals title for second straight year
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Thrashes Rafael Nadal in straight sets 6-3 6-4
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Near faultless display from Serbian World No.2
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Fernando Verdasco and David Marrero win thrilling doubles final
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