PSG 4-0 Barcelona, Benfica 1-0 Borussia Dortmund: Champions League as it happened

A wretched night for Barcelona draws to a close. Their 4-0 loss to PSG tonight is their joint-heaviest defeat in European competition in their long 118-year history. If they are to fight back in the second leg, they will have to become the first side in Champions League history to come back from a 4-0 deficit. Good luck with that.

Full-time: PSG 4-0 Barcelona

Full-time: Benfica 1-0 Borussia Dortmund

Into injury time here and much to the delight of Barcelona, they have four more minutes of this to live with.

Barcelona hit the post! From a corner kick, Pique unselfishly heads back across goal to his centre-half partner Umiti but his effort comes back off the post. Not their night.

Kimpembe makes another sublime challenge to intercept Suarez. He's been outstanding on his Champions League debut tonight.

That's about as good as it has got from Barcelona tonight. Neymar is onto a neat knockdown from Messi and lashes a half volley across goal, but it veers wide of Trapp's far post.

Cavani makes it four on what might very well be Lionel Messi's worst ever night in a Barcelona shirt.

What has happened to Barcelona tonight? Meunier brilliantly side steps Neymar well in his own half, at least 75 yards away from ter Stegen's goal. The Belgian strides forward unchallenged with no Barca player showing the slightest interest in closing him down. He reaches the edge of the D and slides an easy ball through for Cavani whose run wasn't followed and he produces another superb finish, drilling into the far corner.

Goal! PSG 4-0 Barcelona (Edinson Cavani, 71)

Verratti doesn't need the stretcher, but he looks in some pain as he hobbles off. PSG taking no chances, Christopher Nkunku comes onto replace him.

Marco Verratti's evening looks to be over; what initially looks like cramp now looks to be something a bit more serious with a stretcher coming on for the Italy international.

Lucas Moura strolls through Barca's defence unchallenged with space opening up in front of him to shoot. He has a teammate breaking into space to his right but ignores him but instead slides a weak effort straight at ter Stegen.

Meanwhile in Lisbon, Benfica took the lead thanks to Fulham legend Kostas Mitroglu, who was on the scene to convert Luisao's knockdown from close range.

Dortmund had the chance moments ago to pull level from the penalty spot but Pierre Emerick Aubameyang has just missed! Woeful effort from the Gabon international; he was leaning back as he strolled up to the spot and skied it well over the bar.

On his birthday, Di Maria is now coming off after a sensational evening. Lucas Moura replaces him.

Andre Gomes has a woeful evening; the only thing of note he's done is leaving a stud print on Draxler's ankle. He's hooked with Rafinha coming on.

That is outrageous from Di Maria! Receiving the ball 25 yards out from goal, he takes a touch before fooling Iniesta with a superb body swerve, one that also sends Busquets off in the wrong direction. Having moved the ball onto his left, Di Maria bends an outstanding effort into the far corner, perfectly placed past ter Stegen.

The build-up play to that wasn't bad either. It started from Trapp's goal kick, with Rabiot and Draxler doing superbly well in moving it up field.

Goal! PSG 3-0 Barcelona (Angel di Maria, 54)

Goal! Benfica 1-0 Borussia Dortmund (Kostas Mitroglou, 47)

Iniesta now slides a simple pass straight out of play. What is going on?

Nothing has changed in this second half, PSG look sensational, Barcelona are turning in one of their worst performances in this competition in some years.

Rabiot does brilliantly, steaming onto a loose ball and driving through the middle of the box past three Barcelona players before clipping a wonderful ball across goal. It's just out of the reach of Marquinhos, who is still up from a corner moments ago, and sails out.

This strike saw Barcelona fall 2-0 behind just before the end of the first-half. Is there any way back for them?

And we are back underway for the second-half.

Half-time: Benfica 0-0 Borussia Dortmund

Half-time: PSG 2-0 Barcelona

Barcelona are being humbled here. Verratti is playing as both a destroyer and an architect in midfield, utterly running the show. Everyone in a Barcelona shirt is now terrified of Julian Draxler, while Angel di Maria isn't far behind him in achieving that.

PSG double their lead! Rabiot does brilliantly to rob Messi of possession and move the ball onto Verratti. He has plenty of space to drive into and his through ball into Draxler is perfect. The Germany international makes no mistake, drilling past ter Stegen to finish magnificently.

Goal! PSG 2-0 Barcelona (Julian Draxler, 39)

Draxler denied! He drives in from the left at Roberto, dropping a step over here and there before lashing a shot towards the near post, only for ter Stegen to stick out a hand and make the vital block.

Gomes is shown a yellow card after a nasty stamp on Draxler. That wasn't pretty.

Barcelona almost have one back! It is sublime from Neymar, who plays a neat one-two with Suarez out on the left flank before cutting menacingly across the field, drawing PSG players in. He spots the run of Gomes who has got in behind Kurzawa down the inside right and slides the ball into him, but the Portuguese can't finish.

Barcelona win a free-kick a good 35 yards out that Messi feels like taking on, but it doesn't have the power to beat the PSG wall.

PSG have been superb so far - with this man providing their opener.

Trapp has a moment of panic in the PSG box and is forced to lump the ball out of play with Barcelona pressing. From the corner however they can't work anything, retreating backwards before losing the ball after some very sloppy passing. Very un-Barcelona like.

Exquisite from Di Maria. He receives the ball from Verratti in the middle of the park and threads the ball through for Cavani with the outside of his boot. He takes the shot on from the edge of the area but it is a comfortable save for ter Stegen.

Neymar has now trotted over to the touchline to get some treatment.

Brilliant from Di Maria! The former Manchester United man whips it expertly over the wall and into the top right hand corner. That's exactly what they deserve - PSG have been superb so far.

Goal! PSG 1-0 Barcelona (Angel di Maria, 18)

Draxler waits for a pass from Di Maria and brilliantly flicks it around Umtiti on the edge of the box. The former Lyon defender brings him down and is perhaps lucky to avoid a yellow card for that. PSG free kick.

Neymar causes a moment of concern when he appears to limp away from a challenge. He goes down for a minute - but it just to tie his laces back up.

Ter Stegen to the rescue! It's sublime football from PSG and the end ball frees Matuidi who blasts one on goal from just inside the box. It draws a good save out of the Frenchman. Di Maria gets the follow up but his effort on goal is a little easier for the German to deal with.

Busquets is left in a heap after a late challenge from Matuidi. The France international is straight over to apologise and that looks to save him a yellow card.

Draxler threatens to drive infield after being picked out brilliantly but Marquinhos but Roberto reads it well and nicks the ball away from the German.

Di Maria lifts in a superb diagonal ball to find Cavani inside the Barcelona box but the big striker takes far too long to pull the trigger. By the time he does, Sergi Roberto is back to make an important block. Great start from PSG, here.

A long ball over the top threatens to leave Matuidi through one on one but Ter Stegen is out to nonchalantly flicks the ball over him and cleares.

Two minutes in and we have the first yellow card of the game. Neymar brilliantly flicks the ball around Meunier to get the better of the Belgian and looks to cut inside from the left. He is cut down by a challenge from Rabiot and it is a deserved booking for the young midfielder.

And PSG get us started at Parc des Princes. PSG kick-off in their usual dark blue, Barcelona in their-not-so-usual mint green.

Right. Here we go. After a two-month break, we are moments away from being reunited with the Champions League. Oh how we've missed it.

Lionel Messi has already scored 10 times in this season's Champions League campaign. That's four more than his nearest challenger Edinson Cavani.

Team news is in from tonight's other last 16 match at the Estádio da Luz...

As expected, Gerard Pique returns to the Barcelona starting Xi with Rafinha Alcantara taking a spot on the bench.

Paris Saint-Germain team to face Barcelona: Trapp; Meunier, Marquinhos, Kimpembe, Kurzawa; Rabiot, Verratti, Matuidi; Di María, Draxler; Cavani

Barcelona team to face PSG: Ter Stegen; Roberto, Pique, Umtiti, Alba; Busquets, Iniesta, Gomes; Messi, Neymar, Suarez.

Team news: Barcelona

Gerard Pique and Rafinha Alcantara are ready to return to action tonight after missing the 6-0 win over Alaves on Saturday. Luis Enrique has a number of injuries to contend with however with Arda Turan, Javier Mascherano and Aleix Vidal all unavailable.

Team news: PSG

The trio of Marco Verratti, Kevin Trapp and Thomas Meunier all returned at the weekend in the comprehensive 3-0 win over Bordeaux and are all in contention to start tonight. Javier Pastore is also expected to feature. Unai Emery said of the Argentine on Monday:

Pastore? He is a lot better and trained with the squad this weekend, and he will train with us today. He needs to get his match fitness up to play a full 90 minutes. He is a quality player and can bring a lot to the team. We will decide today if he will be in the squad for Tuesday's match.

Team news: PSG

Unai Emery faces a major selection decision at the back tonight with Thiago Silva ruled out with a calf problem. Thiago Motta meanwhile misses out through suspension.

Valentines Day? Never mind that. 14 February marks the return of the Uefa Champions League and it is back tonight with perhaps the biggest fixture of the round of 16. Ligue 1 champions Paris Saint-Germain and La Liga champions Barcelona are both stuttering in their attempts to defend their respective domestic crowns but European glory remains firmly within their sights.

Unai Emery was the man brought in to specifically that for the French giants following his successes with Sevilla. Halting Barcelona, who have won their last three games against tonight's opposition, would be a significant statement of intent,