England chase down target with 33 balls to spare
Dunkley's 34 off 18 gets England chase off to flier
England positive throughout - Nat Sciver-Brunt finishes 40 not out
West Indies post 135-7 - Ecclestone takes 3-23
Matthews gets West Indies off to good start with 42
England's opening game in a group which also contains India, Ireland and Pakistan
Target 136
That's another brilliant shot from Heather Knight.
England can afford to wait for the bad balls and Knight does just that, lofting Afy Fletcher over mid-off for four.
Drinks are being taken as we reach the halfway stage of England's innings. It is fair to say it has all gone to plan so far.
Georgia Elwiss
England all-rounder on BBC Test Match Special
Beautiful shot from Heather Knight.
Lovely technique from Heather Knight as she reverse-sweeps the ball away for four. That was delicious.
Victory is already in sight for England. 48 needed from 66.
Henry Moeran
BBC Test Match Special commentator
That was literally as bad as you could get for your first ball.
Zaida James is into the attack and her first ball is a horrible shoulder-high full toss that Nat Sciver-Brunt gleefully pulls away for six.
Seven runs including the no ball which also means a free hit, which Sciver-Brunt pulls away for a single.
Not the best start from the teenage spinner.
Georgia Elwiss
England all-rounder on BBC Test Match Special
There's quite a lot of noise out there. It is a tactic West Indies have used to make it seem more frantic than it is.
#bbccricket
Barney Allen: It seems as though Shane Watson has been appointed the West Indies' women's review coach.
Henry Moeran
BBC Test Match Special commentator
Monday could be a big day for us with the WPL auction. Dan has already eyed up the most expensive restaurant for Alex to take us to.
Heather Knight is the new batter. Will the skipper show the same aggressive approach she has demanded from her team?
Georgia Elwiss
England all-rounder on BBC Test Match Special
Image source, Getty ImagesThat is clever from Afy Fletcher. She brought her length back. Capsey had a wild swipe and got nowhere near it.
Capsey st Williams b Fletcher 13 (Eng 71-3)
One big shot too many for Alice Capsey.
She reverse-sweeps new bowler Afy Fletcher with her first delivery but next ball Fletcher pulls her length back gets it to spin away from the England batter.
Capsey is drawn into the big stroke but gets nothing on it and is stumped way out of her crease.
A short but thrilling innings comes to an end.
Georgia Elwiss
England all-rounder on BBC Test Match Special
Nat Sciver-Brunt is such a strong player off the back foot. This was banged in short and, with her strength, it raced away to the boundary.
Nat Sciver-Brunt has her game face on as she almost dismissively pulls Shakera Selman through mid-wicket for another boundary.
Brilliant shot.
Image source, Getty ImagesThe ramp shot is out! New batter Nat Sciver-Brunt steps across her crease and scoops the ball back over the wicketkeeper for four.
England are bringing out all the tricks today.
I have just seen another replay of that Chinelle Henry catch. It really was incredible. We will drop a clip into this live page as soon as possible!
Henry Moeran
BBC Test Match Special commentator
I love watching Alice Capsey bat.
What an entertaining innings this has been already.
Alice Capsey looks utterly fearless as she crunches Chinelle Henry away through long-on for another four.
A couple of wides completes a wild over and a thrilling powerplay.
Alex Hartley
Former England bowler on BBC Test Match Special
Image source, Getty ImagesSophia Dunkley has crunched that back. Brilliant. Dunkley hit is so hard it made Henry fall backwards.
Henry Moeran
BBC Test Match Special commentator
Image source, Getty ImagesAn astonishing bit of fielding. That is phenomenal.
Alex Hartley
Former England bowler on BBC Test Match Special
Image source, Getty ImagesWow. Wow. Wow.