Jos Buttler is in the mood.

Siddarth keeps bowling back of a length, and Jason Roy pushes the ball towards the fielder at mid-off.

The opener digs out a yorker to end the over.

Sunil Gavaskar
Former India captain on BBC Test Match Special

There's a little bit of room outside off stump. Fielders at long-on or long-off won't make a difference. The ball is going miles.

Eng 50-0published at 4.3 overs

4.3 overs

Well, that's one way to bring up England's fifty!

Jason Roy plays out two dot balls from Siddarth, decides he likes what he sees and, with one huge swing of the bat, clobbers another maximum back down the ground.

A change for India - right-armer Siddarth Kaul who, I'm delighted to tell you bowls in a headband, is on.

Charles Dagnall
BBC Test Match Special

They will run out of pyrotechnics if this continues.

Image source, AFP

Eng 43-0published at 4 overs

4 overs

Roy 17, Buttler 26

Going, going... gone!

Jason Roy stands tall and sends Umesh Yadav's final delivery sailing into the stands, where a gentleman in the crowd drops it. What a shot that is.

That'll definitely improve Virat Kohli's move - Hardik Pandya moves himself around at mid-off to cut off a full-blooded push from Jason Roy, and he misses the ball completely.

The ball goes racing away for another four.

Now Jason Roy gets into the attack!

He runs at Umesh Yadav then, up on one leg, crashes the ball past the bowler and away to the boundary.

Sunil Gavaskar
Former India captain on BBC Test Match Special

He was prepared for the short ball and again went deep in the crease. Even when he doesn't middle it, it races to the boundary.

Deepak Chahar begins with two dot balls, before Jos Buttler decides he's had enough of that. He rocks back and hoists the ball over mid-on's head for yet another four.

Buttler and Jason Roy work a couple of singles to round off the over.

Image source, Rex Features

Andy Zaltzman
BBC Test Match Special statistician

Batting first, teams have only won 22 out of 63 Twenty20 matches in Bristol.

Ooft. This time Umesh Yadav drops short, and Jos Buttler swivels and pulls him away for his fifth boundary of the innings.

A scampered single ensures Buttler keeps the strike for the next over. He's made 21 from just eight deliveries.

Sunil Gavaskar
Former India captain on BBC Test Match Special

Buttler makes use of the depth of the crease, he gets deep so it means he can get under full deliveries.

Umesh Yadav will share the new ball, and he entices Jason Roy into a loose swing and a miss first up.

A single brings Jos Buttler on strike, and a full delivery is promptly tonked back over Yadav's head for four!

James Anderson
England bowler on BBC Test Match Special

It's a high-pressure game where you learn a lot about players. And, as a player, you want to know if you can perform when the heat is on.

Right, after a bit of faffing about with the box of balls, we're ready to start play again.

And it's business as usual as a thick inside edge from Jos Buttler absolutely flies through square leg and away for four. It's been an expensive start for India...

It's taken Jos Buttler two deliveries to knock the ball out of shape.

The umpires aren't happy. On comes a new ball.

Image source, Getty Images

Sunil Gavaskar
Former India captain on BBC Test Match Special

That was a powerful shot. He moved down the pitch like he as playing a spinner.

Four! Down the pitch comes Jos Buttler, and a firm drive sends the ball flying through mid-off and away for a boundary.

And again! This time Buttler stays in his crease and whips Chahar up and over the fielders for a one bounce four.