Croatia qualify for World Cup
They beat Greece 4-1 on aggregate
Result: Switzerland 0-0 Northern Ireland (agg 1-0)
Northern Ireland's World Cup hopes ended
Switzerland will be at Russia 2018
Tie settled by controversial first-leg penalty
Switzerland 0-0 Northern Ireland (agg 1-0)
Some tired legs now. Steven Zuber's cross from the left floats harmlessly over Haris Seferovic.
To sum up Seferovic's night, he carries his run on despite being flagged offside and still hits the post with his shot. He gets a yellow for his trouble as well.
Switzerland 0-0 Northern Ireland (agg 1-0)
There is just the hint that this is there for the taking for Northern Ireland. They are enjoying a decent spell.
Nothing to lose now. Give it everything you've got.
Switzerland 0-0 Northern Ireland (agg 1-0)
Alistair Bruce-Ball
BBC Radio 5 live in Basel
These are huge moments.
Set pieces could be massive for Northern Ireland in the last 25 minutes. There are signs that goal could come. Can they make that one clear, golden opportunity.
Switzerland 0-0 Northern Ireland (agg 1-0)
Switzerland hold firm to head Chris Brunt's delivery away. Northern Ireland come again but Conor Washington is beaten in the air in the box.
Image source, ReutersSwitzerland 0-0 Northern Ireland (agg 1-0)
The first corner is headed behind for a second...
Switzerland 0-0 Northern Ireland (agg 1-0)
Stuart Dallas is putting in a right shift.
He wins his side a corner after turning his man.
Switzerland 0-0 Northern Ireland (agg 1-0)
We're seeing more comedy mistakes now. The combination of tired legs and a mess of a pitch is embarrassing a few players.
All Northern Ireland need is one of these errors to gift them something, anything, in the next 25 minutes.
Reminder - if they don't score their World Cup campaign is over.
Switzerland 0-0 Northern Ireland (agg 1-0)
First change of the evening. Switzerland send on striker Admir Mehmedi for midfielder Blerim Dzemaili.
Switzerland 0-0 Northern Ireland (agg 1-0)
Hit it Saville!
Northern Ireland work a great opening down the left but after George Saville is found in the box, he can only poke a tame effort straight at Sommer, who saves.
Image source, ReutersSwitzerland 0-0 Northern Ireland (agg 1-0)
Yann Sommer gets away with one.
The keeper comes out to try and punch Chris Brunt's launched free-kick into the box but flaps and misses under pressure.
Unfortunately for Northern Ireland, nobody is able to get a touch towards goal.
Thirty minutes left.
Switzerland 0-0 Northern Ireland (agg 1-0)
Another Swiss chance goes begging. Steven Zuber gets round the back but his low cross runs across the face of Northern Ireland's goal.
Switzerland 0-0 Northern Ireland (agg 1-0)
Keith Gillespie
Former Northern Ireland winger on BBC Radio 5 live
The keeper was beaten. We've looked threatening all night with that bit of pace Ward offers.
It will be interesting now to see how long O'Neill leaves it without looking at his bench.
Switzerland 0-0 Northern Ireland (agg 1-0)
Oh, so close!
Northern Ireland break down the right and Jamie Ward's pinpoint cross is headed just wide of the far post by Conor Washington.
It is their first real chance of this half. On the evidence of the evening so far, they may not get a load more. And they have to take one.
Image source, ReutersSwitzerland 0-0 Northern Ireland (agg 1-0)
Alistair Bruce-Ball
BBC Radio 5 live in Basel
Image source, PAThe Swiss flags are waving again. It's a three tiered stadium and it's some sight all the way around us.
Listen to Alistair and Keith Gillespie by clicking on 'live coverage' at the top of this page.
Switzerland 0-0 Northern Ireland (agg 1-0)
It is all Switzerland.
They get in down the right but the low cross is cut out by a sliding Jonny Evans at the near post. It is backs to the wall stuff.
Image source, EPASwitzerland 0-0 Northern Ireland (agg 1-0)
Fabian Schar is a lucky man. He was fortunate not to be red carded for his foul on Stuart Dallas in the first leg, and he flies into a two-footed challenge here that leaves the same Northern Ireland player on the turf.
No action by the ref.
Image source, ReutersSwitzerland 0-0 Northern Ireland (agg 1-0)
The Northern Ireland goal continues to receive a peppering.
Ricardo Rodríguez is the latest to have a pop, sending his shot flying wide.
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Trevor Priestman: Even though I'm English, really want to see NI progress to Russia. It would be such a shame for them to lose their dream on an awful refereeing decision from the first leg. If they dig deep maybe they can put it right in the 2nd half.
Switzerland 0-0 Northern Ireland (agg 1-0)
Aaron Hughes to the rescue.
Switzerland sweep through the box from right to left, presenting Steven Zuber with an opportunity, but his shot is blocked by the experienced Northern Ireland defender.
Another chance goes begging.
Switzerland 0-0 Northern Ireland (agg 1-0)
Karen Fazackerley
BBC Sport Northern Ireland
Image source, BBC SportThe Northern Ireland fans have not stopped singing throughout that entire half. They're determined to have a party whatever happens tonight. The more hardcore among them are dancing half naked in the rain, I can tell you it's absolutely freezing so rather then than me!