"Finishing the year as the number-one bowler is like an icing on the cake that I have managed to build over the past last 12 months," said Ashwin.
Ashwin is the lone Indian to feature in the top 10 of the latest ICC Test Player Rankings as he continues to lead the way in the all-rounders list.
Pujara has jumped five places to a best-ever seventh position with 777 ratings points while Ashwin is now at a best-ever sixth spot.
England won by 10 and seven wickets respectively in Mumbai and Kolkata to lead 2-1 and move within sight of a first series win in India since 1985.
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