India beat West Indies by five wickets in the first Twenty20 international in Kolkata on Sunday with Dinesh Karthik making an unbeaten 31 and Kuldeep Yadav taking three wickets.
Chasing a modest 110 for victory, the hosts achieved their target with 13 balls to spare and take a 1-0 lead in the three-match series.
Debutant fast bowler Oshane Thomas and skipper Carlos Brathwaite took two wickets each.
The second match is in the north Indian city of Lucknow on Tuesday.