The 26-year-old took six wickets in his spell of four overs to help India beat England by 75 runs and win the three-match T20I series 2-1 in Bangalore yesterday.
The 35-year-old score 56 off 36 balls with the help of five fours and two sixes, and in the process notched up his first half-century in the shortest format of the game.
India had beaten England 4-0 in the five-match Test series, 2-1 in the three-game ODI contest before clinching a 2-1 win in the three T20 International matches.
Ganguly also said that he doesn't really understand the term 'finisher' in T20 format since if a player comes early, he can get settled to deal better with death overs.
On IPL auction, Root said the English players have made impact including him and expected everyone to make the right moves to get themselves selected for the Champions Trophy.