India thrashed Sri Lanka by 9 wickets in the decider of the three-match T20 International series in Visakhapatnam in south India. Skipper Mahendra Singh Dhoni asked the opposition to bat yesterday, as India chased down a paltry target of 83 with 37 balls to spare. Man of the match and series, Ravichandran Ashwin, got career-best figures in T20s - 4-8. The series win also helped India retain its No. 1 position in the ICC T20 rankings.