The top seed won the series closing title for an unprecedented third straight year and a fourth time in all as he dominated the Scottish second seed from start to finish.
Djokovic destroys Ferrer to set up Nadal final
The win brought Djokovic's final regular season win-loss record to 78-5 and takes his unbeaten run, stretching back to August 23, to 22.
He will now go on to the World Tour Finals in London having won three out of four Grand Slam titles and six out of nine Masters 1000 series titles in 2015.
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