Eng 138-1published at 18 overs
Roy 81, Root 16
Nice! Jason Roy clatters Ashley Nurse through the covers for four.
England win with 8 balls to spare
England's highest ODI chase
Roy 123 (85), Root 102 (97)
Morgan 65, Bairstow 34, Stokes 20*
West Indies drop four catches
W Indies 360-8: Gayle 135, Hope 64
W Indies hit record 23 sixes - Gayle 12
England take 1-0 in five-match series
Jack Skelton and Amy Lofthouse
Roy 81, Root 16
Nice! Jason Roy clatters Ashley Nurse through the covers for four.
A let-off for Jason Roy.
The England opener miscues one from Jason Holder high over the keeper's head and Oshane Thomas runs around from short third man.
The ball swirls around in the breeze and Thomas dives but can't reach it.
Simon Mann
BBC Sport in Barbados
This reminds me of England's game against Scotland in Edinburgh last year. The England bowlers were thrashed around the ground, the top order seemed to have rescued the situation, but scoreboard pressure got the better of them in the end.
Target 361
Ooosh. Ashley Nurse pushes it through a bit quicker and Jason Roy tries to cut but misses, the ball just evading the stumps.
It's a tidy start from the burly spinner, conceding just four singles from the over.
Time for a drink.
Cheers Amy.
Who'd be a bowler, eh?
West Indies captain Jason Holder has changed his mind - he's not going to bowl, in comes off-spinner Ashley Nurse.
Roy 72, Root 10
Dragged down by Bishoo, and there's no way Jason Roy is missing out on that.
He swats the ball through mid-wicket and beats a sprawling fielder on the boundary for his eighth four of the innings.
And with that, I will take my leave. Jack Skelton will take you through to the close.
Devendra Bishoo is back into the attack after his first three overs went for 24 runs.
Need 248 runs to win
Well, if you're going to swing, swing hard!
Jason Roy has a bit of a heave at Carlos Brathwaite's latest delivery outside off stump, and he gets enough bat on ball to add four more to the total.
Tim Peach
BBC Sport in Barbados
Beer arriving by the truckload for the fans.
That's a hoick and a half from Jason Roy, trying to pull Jason Holder for six, but the man at deep backward square leg can't get there in time to take the catch.
Root is more than happy to keep the score ticking along, winkling out the runs where he can.
Need 261 runs for victory
Easy pickings for England.
Roy and Root knock a couple of singles around to bring up the 100.
Jason Holder does take an age to get his fielders into position.
He spends a while shuffling them around in the deep, and then watches Carlos Brathwaite serve up a juicy leg-stump half-volley that Roy helps on its way to the boundary rope.
#bbccricket
Kush K: Such a stark contrast between our ODI and Test side. We are capable of reaching any score against the white ball but somehow struggle with the cherry.
Target 361
Joe Root is the new man at the crease, and he hustles a single through the leg side to get off the mark.
Bairstow c Hope b Holder 34 (Eng 91-1)
Gone!
Jason Holder goes for a change of length, firing a short ball down at Jonny Bairstow, and Bairstow can't resist the temptation. He goes for a pull shot but he's pushing away from his body, and a top edge flies through to a leaping Shai Hope behind the stumps.
Roy and the physio inspect his hand - it just got jammed on the bat handle.
He seems OK to continue, though, as Jason Holder does some last-minute field shuffling.
Oh, that'll hurt.
Out of nowhere, a Jason Holder delivery rises up on an advancing Jason Roy, and the England opener gets a firm thwack on his bottom hand. He yanks his hand off the bat straight away. Out comes the physio.
Eng 90-0
Jason Roy brings up his half-century with a firm thud through the off side!
Roy jumps onto the back foot and sends Jason Holder's latest delivery thudding away through the covers.
Having previously enjoyed a run of six consecutive bilateral ODI series victories on home soil against England, West Indies have since gone four series without a win.
Their last series victory on home soil was in 1998.
Roy 48, Bairstow 34
This looks so easy for England at the minute.
Jonny Bairstow goes with the pace and helps a Carlos Brathwaite delivery around the corner for his sixth four.
Jason Roy repeats that clever shovel off his hip, coming out of his crease and just turning the ball past the wicketkeeper, and that'll be another good over for England.