India took three wickets in the last three balls to take the closest of victories

But this game proved this is now Bangladesh are now a well-oiled dangerous T20 unit.

Once upon a time, a game where Tamim Iqbal and Shakib Al Hasan (or their preceding superstars) didn’t contribute would have been one the Tigers couldn't compete in.

However, Bangladesh are in no danger of being accused of making up the numbers.

The ICC’s obsession with shrinking cricket seems to put even the smaller Test nations - never mind the associates - under pressure to perform in order to prove their worth at competitions such as the World T20 .

Their bowling attack is as balanced as it has ever been, but it will need totals to defend if India want to win their home tournament.

Bumrah is a world-class prospect

Jasprit Bumrah made his international debut in Australia just three months ago. That day the Indians ran into Mitchell Marsh and David Warner who both passed 100 as Australia posted 330.

But Bumrah came away with very respectable figures of 10-0-40-2 ensuring the total stay under some control and India chased it down with two balls to spare.

Against Bangladesh, Dhoni called on the 22-year-old with his oddly straight-armed gather and seemingly rushed delivery stride to bowl the penultimate over in such a tight run chase.

Bumrah, for whom if international cricket were his girlfriend she might not even have met most of his friends yet, was the coolest man in Bengaluru and got his yorkers in to concede only six from the over.

When you consider Tamim plundered him for 16 in one of his overs earlier, it was a terrific display of nerve from one so young and new to the international game.

His action may be unusual but so is his accuracy and India look to have uncovered a gem.