Four-time winners Italy moved one game closer to a first World Cup since 2014 with victory to end Northern Ireland's dream in their play-off semi-final in Bergamo.

Newcastle United midfielder Sandro Tonali broke the visitors' resolve, and the growing tension at the New Balance Arena, with a thunderous effort from the edge of the area in the 56th minute.

As Northern Ireland pressed forward, Moise Kean added a second off the inside of the post to secure the success with 10 minutes remaining.

Prior to that, Michael O'Neill's side - with the second-youngest average age since World War Two at just 22.5 years - had not only frustrated Italy, but had good spells going forward, but a lack of end product in the final third proved to be costly.

Northern Ireland, who were aiming to qualify for a first World Cup in 40 years and a fourth time in their history, did not trouble home keeper Gianluigi Donnarumma.

But it was Italy, under huge pressure not to become the first winners to miss out on three tournaments in a row, who overcame a side without three key players in Conor Bradley, Dan Ballard and Ali McCann.

Gennaro Gattuso's side will now travel to Bosnia-Herzegovina, who defeated Wales 4-3 in a penalty shootout after a 1-1 draw in Cardiff.

The winner of Tuesday's match will be rewarded with a place in Group B at the World Cup alongside co-hosts Canada, Switzerland and Qatar.

For Northern Ireland, they now face a friendly against Wales in Cardiff as the dust from the World Cup play-off settles.

Even though they won the delayed 2020 Euros, Italy have had a dismal World Cup record since their 2006 triumph with two group-stage exits in 2010 and 2014, and they failed to even qualify for the next two editions after shock play-off defeats to Sweden and North Macedonia.

Through Gattuso, the Italians had built up the passion and team spirit in the side before kick-off and, after a rousing rendition of the home anthem, they started with real intent.

Tonali, who had earlier headed over a corner, had a golden chance to open the scoring but Trai Hume denied the Newcastle midfielder a simple tap-in after Federico Dimarco's effort was parried away by Pierce Charles.

But as Northern Ireland stood firm the noise started to fade and it was not long until the 1,600 travelling supporters made their voices heard.

O'Neill's side did venture forward but the lack of end product was beginning to frustrate the NI manager in his technical area as Ruairi McConville, Ethan Galbraith, who elected to shoot instead of playing in Isaac Price, and Jamie Donley could not make create the openings required.

The strike duo of Kean and Mateo Retegui both had efforts in the opening 45 minutes, and Bastoni headed over from a corner as Italy failed to breach a resolute defence.

Italy were second best at the start of the second half but, just as the game opened up and Retegui spurned a huge opportunity, Tonali's thundering drive from the edge of the area released the tension that had been building in Bergamo.

Ex-Everton striker Kean was twice denied by the impressive Charles, but he finally got the better of the Sheffield Wednesday keeper when he cut inside McConville and finished off the post with 10 minutes remaining.

O'Neill's side put in a spirited performance but, without key players such as Bradley, Ballard and McCann, an upset in Italy was a step too far.

Speaking pre-match, O'Neill had said his squad were "ahead of where we probably expected him to be", and the loss, while it will undoubtedly sting now the age profile, and the manner of the performance, bodes well for the future.

Paddy McNair was the only player over the age of 24 in their starting line-up.

That was what made the discipline in their performance so impressive, but a lack of a clinical edge in crucial moments were the difference.

Midway through the first half Galbraith failed to pick out the run of Price, and Northern Ireland's threat from set-pieces was lacking.

It was only when the game opened up did the Italians pose a real threat, and in a moment which got the crowd back into the game, Terry Devlin's misjudged backpass allowed Retegui through on goal but a heavy touch allowed Charles to come to the rescue.

Tonali's opener was a crucial and gave Italy all the momentum, and Price's clearance fell perfectly for the midfielder, who showed his class with a superb volleyed finish.

At the other end, Donnarumma's weak pass almost gifted Donley an opportunity but he could not get the ball out of his feet, and, as Northern Ireland pressed forward Italy looked to finish the tie.

Hume had to head over a cross from under his own crossbar, and Kean's spectacular effort flashed wide of the post before the Fiorentina forward put the game beyond doubt.

Northern Ireland's final-third struggles were summed up when Jamie Reid could not convert from close range in injury time, and as the Italian celebrations at full-time were deafening, the visitors were left to reflect on what could have been.

The players looked dejected as they applauded the travelling support in Bergamo, and eyes will swiftly move to the future for this young group.