50 for Pererapublished at 19.1 overs
A good and important knock from the skipper Kusal Perera.
It's his 21st 50-plus score in ODIs and second against England.
Eng beat SL by five wickets to take 1-0 series lead
Root makes an unbeaten 79
Bairstow smacks thrilling 43 off 21 balls
SL bowled out for 185 as Woakes takes four wickets
Use audio icon at top of the page to listen to TMS commentary
Highlights on BBC Two at 23:15 BST
Stephan Shemilt
A good and important knock from the skipper Kusal Perera.
It's his 21st 50-plus score in ODIs and second against England.
James Anderson
England bowler on BBC Test Match Special
You look at all the top batsmen in the world, 95% of them have a good defence and a good technique. They have the basics to fall back on. Then you can play around with the shots and different ways of scoring. Nailing down the basics is absolutely key.
Tidy over from Sam Curran.
The trumpet is going again. There's just a pleasant murmur around the ground at the moment. It's a beautiful day to be watching cricket.
After a bit of tape around a finger Kusal Perera is fine to continue.
What's happened here?
Sam Curran surprises Kusal Perera with one that jags back in, and Perera, who was looking to cut, is hit on the top hand.
The physio is out.
Sam Curran replaces Mark Wood.
He has figures of 0-14 from his first two overs.
Good smart cricket from Wanindu Hasaranga as he then takes a single from the next ball.
Jason Roy - who missed the last T20 and this game with a leg injury - is on his way from the nets. We might see him in the remaining two games on Thursday and Sunday.
Good shot!
Wanindu Hasaranga gets down on one knee and smashes Adil Rashid to the long on boundary.
"It's fine Rashy," shouts Jonny Bairstow.
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Georgie Heath: Imagine what could be achieved if everyone put as much effort into their work as Mark Wood does every single ball.
James Anderson
England bowler on BBC Test Match Special
That was a great over. He asked a lot of questions and could have easily found the edge.
How has Mark Wood not dismissed Wanindu Hasaranga in that over?
Four balls in succession he beats the outside edge as the right-hander looks to drive away.
Wood puffs out his cheeks, almost as if to say "what else can I do?".
Russel Arnold
Former Sri Lanka all-rounder on BBC Test Match Special
The scoreboard looks OK. They have a base. Going forward, Sri Lanka have a lot of all-rounders. They can bat, but they lack experience.
Decent start from Adil Rashid with just a single and a wide.
Wanindu Hasaranga is wearing some bright blue shoes. They are an eyeful.
There's some security on the outfield at the moment, and Jonny Bairstow has just shouted "do we get time for that?".
He doesn't fancy a match fine.
We're going to see spin for the first time today as Adil Rashid replaces Sam Curran.
Simon Mann
BBC Test Match Special
These two are trying to rebuild. The scoring rate is reasonable.
If you're at work, and you're just unpacking your sandwich, and tearing open your packet of crisps, here are the three wickets that you've missed so far.
Just three singles off Mark Wood's third over.
Time for a drink.
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To Andrew at 12:00 - If we didn't win that many games chasing... maybe that's why Morgan chose to chase?!
Martin in Cardiff
This partnership is worth 23 now, and has steadied things down for the time being for Sri Lanka.
There's some interesting headwear in the Riverside crowd. Someone is wearing a woolly, rabbit - or at least that's what I think it is - hat with ear covers, think Mario Balotelli.
Someone else is wearing a dome, similar to a beach umbrella. It looked heavy.