England need to be careful here, two debutants. A wicket here and you are into Brydon Carse which feels like a bit of a longer tail. Normally, you'd have Moeen Ali, Sam Curran or Liam Livingstone in next. Hain and Smith to stick around for a while.
Jamie Smith settles those early nerves with his first couple of runs in an England shirt.
Smith, described as a 'generational talent', was featured in our Next Gen series this summer - so you can read all about him here.
Image source, Getty ImagesJamie Smith is a wicketkeeper-batter very much on England's radar in all formats, having been name-checked by Test skipper Ben Stokes earlier in the year.
Has risen through the youth ranks at Surrey where he was frequently playing above his age group, including matches alongside Tom Curran in the county's U17 side when he had barely turned 12.
He is Surrey's second highest runscorer in the County Championship with 729 at 42.88, although his opportunities to keep this summer have have been limited by Ben Foakes' omission from the England set-up.
A big over for Ireland, that.
The wicket of Will Jacks and just one run from it.
Two England debutants are in the middle now, as Surrey's Jamie Smith s Sam Hain.
Alex Hartley
Former England bowler on BBC Test Match Special
Image source, Getty ImagesIt's been a brilliant knock from Will Jacks but it's a shot he will be thinking about for a long time.
Michael McNamee
BBC Test Match Special
Jacks thumps his helmet with has bat and says "what have I done?" He's blown the chance of a century.
Jacks c Balbirnie b Dockrell 94 (Eng 205-4)
Agony for Will Jacks!
He tries to go to his century in style with a slog sweep, a shot that he has played pretty well in this knock so far.
But he goes too early and gets a top edge, which sails straight into the hands of Andrew Balbirnie on the mid-wicket boundary.
Jacks is gutted with that, bashing himself on the head as he departs, but it's a brilliant innings.
That's the first expensive over for Craig Young, who has taken the wickets of Phil Salt and Zak Crawley so far.
Alex Hartley
Former England bowler on BBC Test Match Special
Image source, Getty ImagesA couple of lovely shots from Sam Hain puts the pressure back on to Ireland. Two in a row, two cracking shots.
Wow.
Hain is really showing what he's made of here.
He smokes consecutive boundaries off Craig Young, the first one carved through point and the second lofted over the top of mid-off.
A lovely way for England to bring up 200.
A solid start to international cricket for Sam Hain, who has been one of county cricket's most consistent performers in recent years and has been waiting a while for his opportunity.
Alex Hartley
Former England bowler on BBC Test Match Special
A great shot from Will Jacks, the ball angled down the leg side and he swept it up and over for six.
Will Jacks has been kept relatively quiet in the past few overs but he's had enough of that.
A glorious slog sweep off the spin of George Dockrell for six takes him into the 90s.
Some smart running then brings back-to-back twos for Sam Hain and ensures that it's a very profitable over for England.
Another efficient over from Craig Young, who has been impressive so far with 2-22 from his five overs.
Ireland were all over the place at the start, conceding 55 from their first six overs but have pulled it back pretty well here in the middle.
Here's Sam Hain's first boundary in international cricket.
Sam Hain is easing into his innings now, skipping down the track to Barry McCarthy once more to find the boundary.
The bowler responds well, though, just another two singles from the rest of the over.
Image source, Getty ImagesBBC Sport spoke to some of the people who know Sam Hain best during The Hundred, and he has always been destined for big things.
Former Warwickshire captain Michael Powell discovered Hain at the Loretto School in Edinburgh, where he was on cricket exchange from Southport School in Queensland. He takes up the story...
"He played well beyond his years.
"He was 14 and rocked up off the plane, had severe jet lag, went to bed for about three hours and came out and scored 120 and didn't hit the ball in the air once.
"He just played on a different level. He looked a man against boys.
"He was just one of those straight away - you can see some just have that edge on others. I think it's a mindset, a psychological aspect of the game - he could just churn out big runs."
Warwickshire was an option because of Hain's British port, but at 14 it wasn't at the forefront of his mind with family still in Queensland.
"It took a couple of years, then with my Warwickshire links I rang Dougie Brown and Ashley Giles and said: 'I've got this youngster. I really think he's worth looking at.'
"They looked at him that summer - I think he played in a second-team game down in Coventry, and got 30-odd and 20-odd and Dougie said that from ball one, he just looked like he belonged there."
Read the full article here
Another tidy over from Mark Adair concedes just four. He's recovered nicely in this spell, because his early figures were looking pretty ominous - going for 22 from his first two overs.
Niall O'Brien
Former Ireland wicketkeeper on BBC Radio
This typifies the current England philosophy of batting. Sam Hain, two or three years ago, would've never played that shot. Three years ago, he would've been three off 12 and quite happy because he's got 24 overs left. In modern day ODI cricket, you can't do that.
Matthew Mott and Zak Crawley have placed their faith in him and they want him to be aggressive and play shots.
Ooh! A streaky drive from Sam Hain just evades the hands of a diving Harry Tector at point, bringing him two runs.
But Hain, with a List A average just shy of 60, recovers from his tense start by thumping his first boundary down the ground.