We're into the final minute of normal time...

Josh Magennis stands firm at the front post to clear the danger.

Mancini is like a ball boy and is sprinting to throw the ball back to his players.

Italy win a corner as Bonucci's powerful drive comes off Steven Davis. Two to go.

Three to go...

Roberto Mancini is waving wildly like a man who has been asked for directions to the train station when you go on holiday.

Ian Baraclough, on the other hand, looks relatively relaxed at the moment. We're sure his heart rate is telling a different story.

Cathcart has been brilliant tonight. Lewis loses Berardi in the area but his defensive partner comes to the rescue and hooks it away for a throw in.

OH MAMMA MIA! Stuart Dallas is inches away!

Jamal Lewis cuts the ball across the edge of the area and, almost in slow motion, Dallas comes onto it but his first-time strike is just wide of the post.

Emerson has a go form 25 yards and Bailey Peacock-Farrell tips it around the post.

That's his last action as the full back is replaced by Giacomo Raspadori.

Conor Washington has been a brilliant bundle of energy since coming on. He forces Acerbi into a mistake and Northern Ireland win the throw in.

Northern Ireland have been superb this evening but their set plays must be causing frustration. Again it doesn't beat the first man.

Tom Flanagan nutmegs Bryan Cristante on the follow up. Is that his John O'Shea/Luis Figo moment?

Conor Washington shows brilliant speed and strength to burst into the area. It's a tight angle and he wins a corner.

The noise, somehow, goes up yet another level.

Right, how are we feeling? 15 minutes to play.

Cedric Itten makes it three. Its' not looking good for the Italians!

Now Ian Baraclough makes two changes. Corry Evans and Conor Washington come on Gavin Whyte and George Saville.

Federico Bernardeschi and Manuel Locatelli are on for Jorginho and Lorenzo Insigne.

In Switzerland, the host's third goal has been ruled out by VAR. So now Italy only need one to go top again.

Boy, this is tense!

Di Lorenzo sneaks in at the back post and heads the ball back across goal, and thankfully for Northern Ireland Craig Cathcart is there to head the ball over the top for a corner.

Game. Set. Match.

Mario Gavranovic extends Switzerland's lead against Bulgaria.

Italy need to score twice to secure top spot now with the goal difference and head-to-head.

"You're not very good", rings out from the home supporters.

25 minutes to play and Andrea Belotti is on for Nicolo Barella.

Mark Sterling
BBC Sport NI at Windsor Park

Was that just a brilliant save or should George Saville have given Gianluigi Donnarumma no chance with his effort?

The build-up play was so good, the cross-field pass, the low cross and Saville seemed to catch it well but the PSG keeper was alive to it to dive and keep it out.

That seems to have been the way in front of goal in a Northern Ireland shirt for Saville - either the keeper saves or he hits the woodwork with good strikes.

A huge confidence booster for the hosts, though, in a second half in which Italy have definitely looked worried.