Daryl Dike looks a handful. He's fed again, holds off a defender and is denied by Conor Hazard at his near post.

Michael Smith is on for Daniel Ballard. That's all Northern Ireland's changes done now.

It's almost a first USA goal for Barnsley striker Daryl Dike. He runs onto a defence-splitting pass and clips the ball past Conor Hazard but Ciaron Brown clears off the line.

That's 11 subs made in total, NI have one left.

USA have a corner, which Conor Hazard claws away.

USA bring on ex-Fulham man Luca de la Torre for Kellyn Acosta.

Chance for USA but Kellyn Acosta tries to pass instead of shooting and fails to find a team-mate.

Jamal Lewis has a cross blocked and the loose ball lands to Ali McCann, who shoots wide from just outside the box.

Dion Charles looks handy. He gets the ball in the centre circle, takes on a couple of players and gets a shot on target from 20 yards, although it's straight at the keeper.

Mark Sterling
BBC Sport NI at Windsor Park

For a team that has long struggled to score goals, it is always exciting when a new striker comes into the squad.

There will be a lot of Northern Ireland supporters looking and listening on with great interest to see how Accrington forward Dion Charles does now he has been sent on by Ian Baraclough.

Finding your feet in international football is no easy task, but he has just curled one over with an early touch. Let's see if he can do for NI what he has been doing regularly for his club.

NI bring on veteran Niall McGinn for Aberdeen team-mate Matty Kennedy.

Dion Charles goes close on his NI debut. Kyle Lafferty picks out the Accrington man who lifts a shot high and wide from 20 yards.

Brenden Aaronson almost scores with his first touch but shoots over the bar from near the penalty spot.

Now the USA make more changes. Barnsley's Daryl Dike, Chris Richards and Brenden Aaronson are on. I've lost track of who's coming off at this stage.

NI bring on a few subs including Accrington's Dion Charles for his international debut.

Jamal Lewis, Paddy McNair and Ali McCann are also on.

George Saville, Shayne Lavery, Shane Ferguson and Corry Evans are off.

Christian Pulisic nicks the ball past Daniel Ballard in the box and is brought down. Penalty to the US.

USA debutant Bryan Reynolds wants a penalty as he goes down after a Shane Ferguson arm but the referee isn't interested.

Still plenty of endeavour from Northern Ireland but they've not had anything like a chance in this half.

Image source, Getty Images

The corner is put behind for another after Aaron Long tried to flick it towards goal.

The follow-up corner is half-cleared.

Good defending by Ciaron Brown. He tracks Gio Reyna's run onto Christian Pulisic's ball and gets a tackle in.