Sam Hain endured a restless night’s sleep before making an England debut that has felt inevitable to many observers – even if he had “made peace” with the chance never arriving.

Despite boasting the second-highest List A average ever – only India’s Ruturaj Gaikwad is better – and regularly turning out for England Lions, Hain has had to bide his time for senior recognition.

With their World Cup stars resting, England finally thrust Hain to the fore for his first cap aged 28 and he maximised his opportunity by starring in a 48-run win over Ireland in the second Metro Bank one-day international.

Hain had accepted his moment might never arrive because of the wealth of batting talent England have at their disposal but that did not mean he was not on edge leading up to his classy 89 off 82 balls.

“There’s nerves there and that’s because I really care,” Hain said.

“I really want to do well for England. I’ve waited a long time for an opportunity and I am grateful for it.

“I actually made peace that I might never, ever get the chance but doesn’t mean I lacked ambition. I don’t care who you are, anyone who says they’re not nervous on a day like this would be lying.

“I had a little bit of a sleepless night, waking up around 12am, 2am and 4am. When you realise you’re awake, trying to get back to sleep, that’s when you’re really struggling. Probably the worst I’ve been.

“I wanted to do really well not only for my family, but for all the people that have supported me over the years. As debuts go, it was pretty special. It’s one that I’ll look back on for years to come.”

Hain was born in Hong Kong and raised on Australia’s Gold Coast before moving to Warwickshire in 2012, aged 16, but his British parents still live Down Under so do not often see their son play in the flesh.

However, Hain’s England bow had extra resonance as his father Bryan was able to attend Saturday’s match at Trent Bridge, having been on a working trip to France in recent weeks for the Rugby World Cup.

“He’s director of sport at the Southport (Queensland) school where I went,” Hain explained. “He’s here with about 40 or 50 of the pupils and they are over there playing a few games, watching a few games in the World Cup.

“It’s just by chance that he’s over here and then flew over (on Friday) from France to here. I know how much my mum and dad did for me when I was younger. I think it will be pretty special for him.”

Hain took just a single from his first 11 balls and was dropped off his 12th before steadily blossoming at number five, a role he is not usually accustomed to as he has tended to bat higher for Warwickshire.

He used his feet well and muscled a couple of fours down the ground but otherwise relied on timing and placement – plus one inventive scoop – before falling in the last over after taking England beyond 300.

Hain might find himself more in demand in this format as England look towards the 2027 World Cup – when batters such as Joe Root and Dawid Malan, who have a similar tempo, will be 36 and 40 respectively.

“I’m really not looking too far ahead,” Hain added. “It’s been a long season. Things are just starting to open up for me with franchise opportunities.

“I know how good that squad is that is going to India (for the World Cup), but I also know how good the players are that aren’t in it.

“We are all pushing our cases and we all obviously want to play for England, so it’s a case of whatever will be, will be.”

England’s next generation offered a promising glimpse of their white-ball future as Will Jacks, Sam Hain and Rehan Ahmed all starred in a 48-run win over a full-strength Ireland.

Jacks’ 94 off 88 balls contained seven fours and four sixes, contrasting with a more understated 89 off 82 deliveries from Hain, but the duo underpinned England’s 334 for eight in the second Metro Bank ODI.

Teenage leg-spinner Ahmed collected four for 54 as Ireland were all out for 286 in 46.4 overs at Trent Bridge against England’s understudies, for whom Phil Salt was the most experienced in his 15th ODI.

Ahead of this de facto series opener after a washout at Headingley earlier this week, England’s XI contained a combined 38 ODI appearances – compared with Ireland’s 720 – as the hosts made use of their deep pool of reserves, with their World Cup stars resting ahead of travelling to India next week.

Hain took top billing among the four England debutants but George Scrimshaw had fluctuating fortunes, bowling six front foot no-balls in his first two overs before rebounding with figures of 8.4-0-66-3.

Jamie Smith and Tom Hartley had more modest outings but this was still an impressive display amid an expected changing of the guard after the World Cup, while Jacks’ dazzling innings may have given the selectors a nudge about being on standby should injury befall the main group in the subcontinent.

Tipped as the successors to Jason Roy and Alex Hales, Jacks and Salt paid a fitting tribute to the pair who revolutionised opening the batting for England in the shorter formats, feasting on Ireland’s fruitless pursuit of early swing with a rash of fours to bring up the 50 stand in the sixth over.

Jacks sumptuously drove the expensive Josh Little for three successive fours but Craig Young found a better length, drawing the splice of Salt’s bat on 28 before stand-in captain Zak Crawley was lbw for a two-ball duck in his first England innings since leading their run-charts in this summer’s Ashes.

England ended the powerplay with Jacks dismissively swiping Barry McCarthy for six as he and Ben Duckett steadily rebuilt from Young’s double strike.

Put down on 44, Jacks went to fifty in style by clearing extra cover off Andy McBrine, who also went the distance off Duckett.

Fellow spinner Dockrell had more luck as Duckett paddled to short fine-leg on 48 to end a run-a-ball 102-run stand with Jacks, who slog swept the slow left-armer for his fourth six to move into the 90s.

Attempting a repeat to reach three figures in Dockrell’s next over, Jacks top-edged to Andy Balbirnie, who took a steepler a few feet in from the deep midwicket boundary.

England added just 140 in the final 20 overs but 15 of those came with Hain as the only frontline batter left after Smith holed out.

Hain, whose List A average of 57.96 is the second highest ever, had a single from his first 11 balls and was put down by a diving Harry Tector from his 12th but he gradually started to find rhythm.

Hain used his feet well to offset the bowlers’ lengths in an unobtrusive 52-ball fifty and while there were few big hits – he managed just eight fours in total – he was responsible for England going past 300. Needing 11 off the last over for his century, he miscued McCarthy to mid-off.

While England had their highest score in ODIs against Ireland, the tourists were aided by Scrimshaw’s repeated front-foot faults.

There were four no-balls in his first over in an England shirt and two, plus a wide, in his next as he leaked an eye-watering 35 having sent down just 11 legal deliveries.

When he drew Balbirnie’s outside edge with his 12th, Scrimshaw forlornly turned round to Rod Tucker after Ben Duckett snaffled the chance but the umpire gave a thumb’s up and patted him on his shoulder.

From the next ball, Paul Stirling, whose 250 List A appearances before Saturday was just 29 fewer than England’s XI combined, chopped on for 25 off 17 balls after Matthew Potts found lavish inward movement.

Ireland were up with the rate but wickets fell at regular intervals, with Ahmed into the act when the dangerous Tector was out for 39 after skewing to a backtracking Jacks.

Googlies from Ahmed snared McBrine and Mark Adair, while the youngest member of England’s XI had his fourth from his penultimate delivery as Dockrell clothed another wrong’un to Salt.

From 188 for eight, England were unable to finish proceedings quickly as Ireland’s last three batters McCarthy (41), Young (40 not out) and Little (29) all recorded ODI bests. But Scrimshaw took the final wicket as Little slammed to long-on to banish thoughts of a remarkable Ireland comeback.