Otavio is really upset as he takes his seat in the dugout. He throws a shirt over his head and has tears in his eyes. He's got the ice out and it looks like a hamstring injury.

Porto have got some injury issues. Otávio is having to come off after 13 minutes.

Young midfielder Fabio Vieira is coming on. Porto already lost Pepe in the warm-up. Nightmare!

Lovely switch from Ruben Dias with a cross-field ball to Jack Grealish.

The £100m man takes it cleanly on his chest but then puts it straight out of play when looking to find the run of Bernardo Silva.

Andy Robertson fizzes a curling ball in but it runs away from Mohamed Salah... just!

He was clean through. Great chance. Liverpool have been dangerous on the break.

Michael Brown
Former Man City midfielder on BBC Radio 5 Live

Fabulous goal - PSG finally got some momentum and movement. Lionel Messi travelling with the ball and Kylian Mbappe gets into an area and pulls the ball back just outside the six-yard box - Idrissa Gueye dispatches it right into the top corner, a wonderful finish after a great move.

Image source, Getty Images

After a lengthy VAR check on an offside, RB Leipzig are able to celebrate Christopher Nkunku's goal. It's not a great finish, but it certainly counts.

Luis Diaz is keeping James Milner busy. The Liverpool utility man is given a chase with one over the top but he deals with it.

It comes back to Diaz on the edge of the box a few moments later but he drags the shot straight at Alisson.

The home crowd turn the volume up a notch when Lionel Messi gets his foot on the ball for the first time down the right-hand side.

Image source, Getty Images

Luis Diaz feeds it into Mehdi Taremi but his touch is poor. Andy Robertson breaks for Liverpool down the left but it doesn't quite fall for Mohamed Salah.

Michael Brown
Former Man City midfielder on BBC Radio 5 Live

Will Man City be brave enough in the full-back areas to leave the two wide players of PSG? They have started as though they are going to do that.

82% possession for City after three minutes.

They pretty much had that throughout the game against Chelsea at the weekend.

Will the visitors keep MNM (Messi, Neymar, Mbappe) quiet?

Image source, Getty Images

Curtis Jones goes on a run down the left with Andy Robertson screaming "go on son" behind him.

He's eventually stopped before Virgil van Dijk concedes a throw-in near the touchline.

PSG goalkeeper Gianluigi Donnarumma is making his Champions League debut.

Surprising stat of the night.

Under way at Parc des Princes.

It's bouncing in there, red flares have already been lit by the home supporters.

Image source, Getty Images

Off we go in Porto. Liverpool players are wearing black armbands in memory of former striker Roger Hunt.

There's a late change to the Porto side. Fabio Cardoso comes in for skipper Pepe at centre-back after he picked up an injury in the warm-up. A blow for the hosts.

Everyone ready? Pumped for this one?

Here's the Champions League anthem.

"The championssssss."

Bartholomew: Would prefer Keita over Jones in midfield. Jones certainly looking like a bright prospect for the future but why did Liverpool spend 54 million on a player to sit on the bench?

Simon Gleave
Head of sports analysis, Nielsen Gracenote

Image source, Gracenote

Liverpool's chance of reaching the knockout phase suffered a blow when they were drawn in Group B with three other teams from the Euro Club Index top 25.

However, an opening matchday victory against AC Milan (ranked 21st) has improved the Reds' chances of a place in the last-16 to 85%.

Tonight's opponents are theoretically better than Milan though as they are ranked 16th in the Euro Club Index so this is also a tough fixture.