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A rotten 115 minutes of football was almost made worth it by a thrilling conclusion to extra time. Minutes after Croatia hit the post, Portugal were up the other end with Ricardo Quaresma nodding home from close range after Ronaldo's effort was saved. Portugal haven't won a game inside 90 minutes in this competition yet, but somehow, they are in the quarter-finals.

Ricardo Quaresma
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Full-time: Croatia 0-1 Portugal

Vida inches from equalising! A free kick in from the left causes havoc and the centre half almost hooks it brilliantly into the top corner with the last kick of extra time, only for it to veer inches wide.

Straight after that goal Pjaca is tearing down the right flank, scurrying into the box surrounded by Portugal defenders. Cedric blatantly gives him a push in the back but the Croatian stays on his feet, only to lose the ball.

Only had to wait 117 minutes for our first effort on goal.

Portugal have snatched this! Moments after Perisic hit the foot of the post with a header, his side are on the brink of elimination. Sanches breaks brilliantly with options to his left and his right, opting for Nani whose shot on goal is hopelessly miss hit. It squirms through for Ronaldo whose drive across goal is saved by the goalkeeper, but following it up is Quaresma who bundles it over the line!

Goal! Croatia 0-1 Portgual (Ricardo Quaresma, 126)

Perisic is fed just inside the box after a surging run from Srna but just as he pulls back to shoot Cedric makes a terrific block.

What a chance for Vida! From a corner kick the defender peels away from Carvalho with Patricio out of the equation, having been blocked by his own man. It's a free header, but he plants it over the bar and our search for an effort on goal goes on.

Guerreiro lifts a cross in from the right and Nani does his best to channel Xherdan Shaqiri with an overhead kick. All he connects with is fresh air, however, and Croatia can clear.

Sanches and Ronaldo exchange passes neatly just inside the box but when the latter looks to include Nani, the Fenerbahce winger misplaces his return and it allows Srna to intercept.

Here's another change for Portugal, Adrien Silva's evening is over and he is replaced by Danilo.

After a quick breather, we are back underway. Just 15 more minutes of this, I promise.

Still no shots on goal in 105 minutes of football.

Half-time in extra-time

Ronaldo had 32 shots on goal in Portugal's three group matches. Not a single one tonight.

Modric prods a ball into Brozovic who advances on goal before taking the shot on from 25 yards out. Guess what? It's gone wide.

Croatia
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That Croatia huddle hasn't inspired much yet.

Carvalho takes a swing and a miss and it allows Croatia to play the ball in behind the midfield with Kalanic running into space down the inside right, He cuts into the box with Fonte for company and opts for an early shot but it's woefully miss hit and isn't troubling Patricio. It's an awful attempt, perfect for this match.

Perisic just tried to chip the goalkeeper with a header. Apparently that's a thing.

Add another one to that list.

Modric elegantly dances past his man before Sanches charges into the back of him, sending the Real Madrid man tumbling. This is a decent position for Croatia, but that didn't prevent all the earlier ones of being wasted too.

Aaaand extra-time is underway. 30 minutes from penalties.

Croatia have a corner what will surely be the last action of the 90. His delivery has been poor all afternoon and this isn't much better. Portugal clear and the final whistle goes. Extra-time to follow. Brilliant.

Three minutes of injury time added on. 30 more await in extra time. What have I done to deserve this?

A change from each side with Mandzukic off for Kalinic, while Ricardo Quaresma has replaced Joao Mario.

Only one man has entered the referee's book so far this evening.

William Carvalho
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Sanches overruns the ball and goes in late on Badelj. Lucky to avoid a booking there.

William Carvalho picks up the first yellow card of the game for holding back Brozovic. It's a decent chance for Croatia to put the ball into the box but Rakitic hopelessly over hits it and sends it out of play. Rubbish.

Just over 10 minutes remaining here. I've never been so certain of a game going to penalties in my life.

Srna chucks a ball in for the far post with Perisic trying in vain to get on the end of this. Plenty of crosses in this game, David Moyes would be proud.

Rakitic takes it but Ronaldo scoops clear in the box. What a waste.

Srna tries to find space down the right but his cross is charged down Guerreiro who again defends well. Croatia come again however through the captain and Sanches nudges him in the back to send him sprawling. Free kick right on the edge of the box.

Joao Mario takes the free kick but Vida easily clears.

Sanches does well out on the right, holding off Rakitic to protect the ball and wins the free kick for his side. Good stuff from the 18-year-old.

Carvalho almost frees Ronaldo inside the box with a wonderful long-range pass but his teammate is squeezed off the ball by Vida. Lots more urgency from Portugal now.

Renato Sanches
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Sanches was brought on four minutes into the second half.

Vida misplaces a pass out from the back and Ronaldo is onto it, scooping a ball into the box for Nani to run onto. He tries to get between the two centre halves but is cut down by Strinic who catches the winger in an attempt to clear. Surely it's a penalty? No, not even a corner.

Best chance of the game for Croatia. Srna stands over a free kick over on the right and his delivery into the box is excellent; right onto the bonce of Mandzukic. That's where it would have landed, had Vida not ran onto it first. He should still score but he hammers his header wide.

Strinic has found his crossing range in this half; he flings another cracker in from the left that Fonte has to very carefully nod away for a throw in. Still not much life to this match, mind.

Oh Sanches. It's initially brilliant from the 18-year-old midfielder, who side steps past his man before playing a neat one two with Adrien Silva. The ball comes back to him on the edge of the D with space in front of him but he drags is effort horribly wide.

Modric comes in from the right and tries his luck with a left-footed effort from 25 yards out but it sails harmlessly over.

Brilliant defending from Guerreiro: Strinic flings a fine cross in from the left with Mandzukic lurking but the full-back stretches to nod it behind for a corner. Portugal are asleep as it is taken quickly and are almost caught out but Brozovic fires his shot over the bar.

Renato Sanches is coming on, replacing Andre Gomes four minutes into the second half. Why didn't Fernando Santos just make it at half-time?

Modric accelerates through the middle, easing past two Portugal players before attempting to free Rakitic down the right flank. It's a nice idea, but his pass is just overhit.

And Portugal get us back underway for the second half. Please get better.

No shots on target in that half. Perisic's new barnet has been the highlight of this borefest.

Ivan Perisic
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Half time: Croatia 0-0 Portugal

That was painful.

I guess you could call that a chance? Croatia come forward with Perisic spreading the ball over to the left where Strinic has galloped into space. He tries to find his teammates in the box but his cross is a poor one and Pepe easily clears.

A woeful first half hasn't been helped by persistent stoppages. Lots of niggly fouls that the referee is more than happy to stop play for.

Rakitic pulls his right leg back to hit a shot from 20 yards out but he goes down under pressure from Carvalho. The ref plays on and Portugal break, moving the ball upfield quickly and skillfully, but it comes to nothing when Nani is unable to get his cross into the box.

This is better from Portugal, a series of neat one-touch passing triangles helps them gain ground upfield.

Cristiano Ronaldo
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There hasn't been much from this man yet.

Nani loses the ball far too easily in the middle of the park and it allows Rakitic to free Perisic down the right. He cuts in, jinking inside Guerreiro, but his low drive only finds the side netting.

Half an hour in and that Pepe header has been the best chance of the game. Not hard, given, it's the only thing of note to have happened.

Ronaldo has his heels clipped out on the left and Portugal have a free kick. Ronaldo doesn't take it (!) and Gomes curls it into the box where Pepe is unmarked, but he can't keep his header down and nods over.

Andre Gomes jinks into the box from the left and goes down under pressure from Corluka. Play is waves on however and Rakitic tries to break, but Portugal quickly smother it and retrieve the ball.

20 minutes gone here, some will describe it as cagey so far. I'll go with just plain awful.

This has all been very tame so far, but Portugal are beginning to find something resembling some rhythm.

Nani is down again, yelping out over on the right as he is caught by Vida's boot.

Ronaldo is on the ball for the first time in the final third but his club mate Luka Modric has tracked back to intercept and rob him of the ball.

Nani goes down after a duel with Perisic and looks in a bit of pain. The Croatian's arm appeared to catch him in the face but it is nothing serious.

When the group stages were settled this looked like one of the matches of the last 16 stage. By the laws of football, that means it's now going to be rubbish.

Srna lumps a cross into the box from the right but is nodded away by a Portgual defender.

Croatia are dominating possession in these early stages but are easing into the contest, moving the ball across the pitch without much of a threat posed. Slow start.

Ivan Perisic
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Ivan Perisic's barnet dominated pre-match built-up, of course.

Croatia get to wear their home kit in this competition at long last, Portugal are kitted out in that mint-green number again.

20 seconds in and Luka Modric has misplaced a pass! Unbelievable scenes.

And Croatia get us underway.

There's a few tears from Dario Srna as the Croatian national anthems booms out.

Five minutes until kick-off, times for the national anthems.

Cristiano Ronaldo
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Everything Portugal do runs through one man. It has been to their detriment at times so far in this competition, but as he showed against Hungary, Cristiano Ronaldo remains a force to be reckoned with.

Croatia have six players who are a booking away from missing the quarter-finals. Vida, Srna, Brozovic, Badelj, Perisic, Strinic all have to be on their best behaviour. Pepe is also another yellow card from a suspension. But I suppose you could have guessed that.

Pepe
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It will be a special game for Nani tonight; he will be making his 100th appearance for his country.

Let's have another look at that Portugal team. After three draws, Fernando Santos has sought to change things up in midfield with Adrien Silva coming in for Joao Moutinho. Portugal were hopeless at the back against Hungary so Southampton duo Jose Fonte and Cedric Soares have come in at centre half and right back.

We've just had a very British affair in Wales vs Northern Ireland and it played out exactly as many of us thought it would; a bit of an eye-sore at times. Let's hope there is a bit more artistry about with this one.

Portugal were insipid at times against Austria and Iceland; upping their game against a team quickly becoming a competition favourite is a must. Manager Fernando Santos said:

It will be a totally different game to the ones we've had. Austria did things well against Portugal, and a lot of people thought we'd beat Iceland but it didn't happen. We are prepared to play a completely different game.

"Croatia have had a little bit more rest time. Obviously we'd have liked more time and I'm sure Croatia would've too. But right now we're here and there's no point crying over spilled milk.

Wales have beaten Northern Ireland thanks to an own goal from Gareth McAuley; they progress to the quarter-finals where they will take on Belgium or Hungary in Lille next Friday. Reaction here.

Croatia team to face Portugal: Subasic; Srna, Corluka, Vida, Strinic; Modric, Badelj; Brozovic, Rakitic, Perisic; Mandzukic

BREAKING: Mario Mandzukic returns for Croatia tonight, as does Luka Modric after both were rested in the victory over Spain.

Luka Modric
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Portugal team to face Croatia: Rui Patricio; Cedric, Pepe, Fonte, Raphael Guerreiro; Joao Mario, Adrien Silva, William Carvalho, A Gomes; Nani, Ronaldo

BREAKING: As expected, Raphael Guerreiro returns to the Portgual XI after recovering from that muscular problem that ruled him out against Hungary.

These two sides have only met each other once in major international competition with Portugal easing to a 3-0 win at Euro 96. A Cristiano Ronaldo goal was the difference in their last meeting three years ago.

Team news: Portugal

Fernando Santos has no injury problems to contend with and has been boosted by the return of Raphael Guerreiro. The left-back, who completed his move to Borussia Dortmund this week, missed the 3-3 draw with Hungary due to a muscular problem but is fit to return to the starting XI tonight.

Team news: Croatia

Mario Mandzukic was rested against Spain last week, will he return tonight? His replacement in that match Nikola Kalinic scored his side's first with a wonderful finish, leaving Ante Cacic with a bit of a selection headache.

As mentioned, Luka Modric is expected to return.

Poor Gareth McAuley; he's just accidentally prodded home a devilish cross from Gareth Bale that has given Wales the lead against Northern Ireland. You can follow the final 10 minutes of that game here.

Fresh from ending Spain's 14-match unbeaten run in this competition, Croatia are now a genuine favourite to reach the Euro 2016 final. While a war between their supporters and their own FA back home still rages and threatens to cast a shadow, they are perhaps providing the best football we have seen at this summer's competition.

Against Iberian opposition again tonight, their hopes of reaching the quarter-finals where tonight's winners will play Poland will be emboldened by the likely return of their conductor-in-chief Luka Modric.

Despite failing to win a group game, Portugal find themselves in the knockout rounds. Cristiano Ronaldo was finally able to provide the magic that deserted him in matches against Iceland and Austria when he struck twice against Hungary with a performance that hauled them into this position. With Lionel Messi one match away from winning his first major international honour with Argentina at the Copa America, Ronaldo will be desperate to match his old rival in any way he can.

Kick is off just under an hour and a half away, stay tuned for all the team news as it reaches us.