Barca miss a golden opportunity to give themselves a sliver of hope in the tie. A corner is headed on by Pique and somehow nodded against the post by Samuel Umtiti from point-blank range. A big let-off for PSG, who will not be wanting to give any encouragement to their opponent for the second leg.

Barca's poorness will be a focus, but it should not be at the expense of PSG's brilliance. This is a calling card, a signal of intent, from both the French side and their manager. We're not playing games anymore.

Barca finally earn themselves a sight of goal. Neymar can't make the most of it, though, as he slices his effort wide of goal from inside the box.

Meanwhile, in Lisbon, Dortmund are piling on the pressure in search of a leveller. The home side holding firm, though.

Image source, Reuters

Barca just look shot. There is complete open space in midfield for PSG to run into. This could get worse for the Spanish champions. 

I honestly can't remember seeing Barca swept aside in such a ruthless manner. Certainly not this century.

Image source, Reuters

Cavani now has 34 for the season. Ten in his last seven games.

Image source, AFP

PSG are forced into a second change. Marco Verratti's brilliant display is ended by what could be cramp or a minor muscle tweak. He limps off to replaced by Christopher Nkunku. 

Image source, AP

Sammiiee!!: I think this is the first time in a while we can agree that Messi has been terrible

Alex Smith: PSG playing some unbelievable football tonight, quick and strong play, battering Messi and co. 

Image source, Reuters

Suarez, Messi and Neymar haven't had a sniff so far. Not. A. Sniff. Suarez looks to get something going with a pass to Neymar but he is crowded out the very second he gets the ball out of his feet. Ruthlessly efficient from PSG.

Pierre-Emerick Aubameyang's rubbish night is brought to an early end as he is replaced by former Chelsea man Andre Schurrle.

If you are just joining us, I can inform you that Barcelona are taking a pasting. It is not often you get to write that sentence on one of these live text thingies. 

Angel di Maria - who has bagged two goals - has gone off. Must be injured. Can't imagine PSG would want to ease off the gas for a second the way this is going.

Aubameyang is not having a good night. That is his third miss and easily his most egregious.

Image source, EPA

Ederson to the rescue! He stands still as Pierre-Emerick Aubameyang whacks it down the middle and is able to punch the ball away. Lisbon goes wild.

Image source, Getty Images

Dortmund have a life-line. Ljubomir Fejsa dives in on Marc Batra and fells him while also handballing. Ref points to the spot.

Actress Liv Tyler and her partner David Gardner are in Paris tonight. The perfect Valentine's date? As long as they're not Barcelona fans. 

Image source, Reuters

Andre Gomes' torment is over. He is replaced by Rafinha.

Image source, Reuters

And still PSG pour forward. Draxler chips the ball into the box and just a yard away from the outstretched boot of Cavani. Barca need to do something here. On cue, they are preparing a change.