Join us here for the pre-match build-up from 20:00 - kick-off here in Porto is at 20:45.

The ref blows his whistle and Northern Ireland pick up a point improbably and heroically.

Varela's been dangerous down the flank. He beats his full-back, but the ball rebounds and goes out for a goal kick.

Northern Ireland win a free kick, and take their time about taking it. They almost counter but are called for off-side.

It's 11 men behind the ball for Northern Ireland now as they desperately try t contain wave after wave of Portuguese attacks.

Moutinho plays it well down the right to Ronaldo, who puts in the cross. Portugal win a corner from Cathcart. Nothing comes of it, but Portugal continue their relentless pressure.

Varela gets the ball on the left and puts in a fantastic ball into the box. Evans just makes the clearance.

Ronaldo is shepherded well and can only tamely hit Carroll. We will have 5 minutes injury time.

Portugal quickly press back on the attack through Nani, who fires powerfully and just over the frame of Carroll's goal.

Varela picks up the rebound jist outside the area and hits a stinging shot at the side-netting. It's actually saved by Carroll, but the ref blows for a goal kick.

Nani plays a nice ball to Veloso who picks it up down the left. Portugal win another corner.

Starved of support, Lafferty attmepts to take on the entire Portuguese back four by himself. His efforts prove futile.

Northern Ireland play their best stuff since the goal deep in Portugal's throw, but Lafferty is called for being offside.

Portugal whip in a free-kick, Ronaldo is unfairly penalised for pushing in the area.

Postiga feeds Varela down the right, who balloons his cross over despite Ronaldo waiting in the middle. Aaron Hughes picks up a yellow for time-wasting.

Northern Ireland holding their nerve here as Portgual look for the winner. Ronaldo's looking to get involved all over the pitch as he attacks first down the left, then the right.

Yellow card for Pepe

Baird gets the ball in to Jonny Evans who heads over. But the atmosphere inside the stadium has racked up for Portugal now.

And with that Postiga scores neatly on the turn to level things after neat work down the left from Portugal.

The stadium sounds quiet now as Ronaldo gives the ball away, but there's still time for Portugal

Northern Ireland have half a chance on the break as they shoot just over from a counter-attack.