Use audio icon at top of the page to listen to BBC Radio 5 Sports Extra commentary
Paul Stirling hits 65 not out
Andrew Balbirnie out for 37
Gareth Delany takes 3-16
Brandon King top scores for West Indies with 62 not out
West Indies won the toss and decided to bat first
Mayers & Charles out early
Evin Lewis caught first over after drinks break
Both sides have won one and lost one
Winner will advance to Super 12 stage
Scotland face Zimbabwe in other final Group B game at 09:00 BST
Target 147
I would imagine West Indies just want this game to be over now.
Ireland are inching ever closer to the Super 12s. The last time they reached the second round of games in a T20 World Cup was in 2009 so this will mean so much.
Target 147
Oh, wow. When it's not your day...
Odean Smith thinks he has the wicket of Lorcan Tucker, caught and bowled off a well-directed bouncer, but it's a no-ball!
Would you believe it? Nothing is going right for the West Indies at all.
WI 106-1
A half-century for the brilliant Paul Stirling from just 32 balls. He reaches the milestone via a deliberate outside edge down to third as West Indies continue to struggle to find any answers to him.
He has led Ireland in to a fantastic position.
Here is how Ireland lost their first and only wicket so far, Andy Balbirnie departing for a fine 37.
Target 147
Even Alzarri Joseph has been uncharacteristically expensive today, West Indies' star bowler conceding 31 from his three overs.
Ireland bring up their 100 and the Super 12s are getting ever closer.
Target 147
Paul Stirling has been at his brutal best today. Alzarri Joseph drops too short and the Irishman absolutely nails it over mid-wicket for six where a fan takes a solid catch on grass bank.
Henry Moeran
BBC Test Match Special commentator
Ireland can see the finish line, they can see the Super 12. West Indies need a wicket
Target 147
Ireland are just happy to tick along in singles, six more of them coming from Akeal Hosein's third over.
The runs are still too easy to come by even when they're not finding the boundary, though, so West Indies still have a lot to do.
Alex Hartley
Former England bowler on BBC Test Match Special
The West Indies really have to find a way to plug the gaps and stop those easy singles. And try to put some pressure on Tucker.
Target 147
A much better over from Jason Holder, just six runs from it, but Ireland are so far ahead they can easily afford a couple of quieter overs.
Target 147
And Lorcan Tucker picks up exactly where his captain left off, timing a sweep shot to perfection and helps himself to four runs.
Alex Hartley
Former England bowler on BBC Test Match Special
He'll be absolutely furious. He could have hit it anywhere. Balbirnie has got Ireland off to a flier so it's not the end of the world.
Balbirnie c Mayers b Hosein 37 (Ire 73-1)
Something for the West Indies to cheer, at last.
It's not his best ball but Akeal Hosein won't care in the slightest. Short, wide and Andy Balbirnie slices it straight to point.
He's disappointed but that's a fine innings and he's helped get Ireland off to an absolutely flying start.
Target 147
The experienced Jason Holder takes his first over as West Indies try and regain some kind of control or even just some pride.
But even he gives away runs, drifting down the leg side and allowing Balbirnie to flick it off his legs for an easy four.
Daniel Norcross
BBC Test Match Special
That's the end of the powerplay and what a powerplay it has been for Ireland.
Ireland well ahead at the end of the powerplay
Image source, BBC SportTarget 147
Back-to-back fours from Paul Stirling and the carnage continues. West Indies' fielders have their heads in their hands, grimacing.
It's pretty clear who's on top at the end of the powerplay - it's been all Ireland.
Nine off the over seems a good result for West Indies at the moment. They have had no answers and the Irish opening pair have run riot.
Shot of the day. That is beautiful.
Andy Balbirnie uses the pace of Obed McCoy to drive him over cover for six! Perfect timing and that's Ireland's 50 up already.
Image source, BBC Sport