Little argy-bargy involving Liverpool's Joe Gomez.

The defender comes out to the touchline to take a throw-in and has the ball shoved into his chest by the ballboy.

Reds boss Jurgen Klopp comes over to defend his man, wagging a finger at the lad, before the referee steps in to end the confrontation.

Image source, Reuters

Ederson! The first wobble I think I've seen from the City keeper! He is outside his area and takes a bad touch, he has to make a sliding recovery tackle and just about gets the ball.

Get that wrong and it's a red card...

Alistair Bruce-Ball
BBC Radio 5 live

Pierre-Emerick Aubameyang is maybe back in the bad books again after that earlier miss when he was one on one. It looked like a rather indecisive stab at the ball rather than trying to stroke it past Hugo Lloris. He's not scored in his last five appearances for Dortmund but he really should have scored there.

Image source, Reuters

Johnny: Since leaving West Brom has Tony Pulis joined the Liverpool coaching staff? Scoring from TWO corners in one game? Since when have we done that?! Amazing. Thanks Tony!

Grant: This Liverpool team are made for European competition, they chase the ball down and have pace to burn.

Andrew: We should be 2-1 down and we're 2-0 up. It's a funny old game as Greavsie used to say

This game is still goalless, but Spurs forward Son Heung-min cannot direct his effort on target from close range.

It was an excellent ball into the box by Serge Aurier, who seems to be the preferred option in the Champions League.

Pat Nevin
Ex-Chelsea winger in Seville for Radio 5 live

Sevilla lost a goal no more than twenty minutes ago and they haven't learned a thing. Liverpool could have been 2-1 down and within two or three minutes they lead 2-0. That was a quite incredible five minutes.

You can listen to full commentary on BBC Radio 5 live and watch 5 live Final Score at the top of this page and on the Red Button.

Dortmund striker Pierre Emerick-Aubameyang breaks the offside trap and is one-on-one with Hugo Lloris, but shoots wide of goal.

Kevin de Bruyne threads in another dangerous cross, from the City left this time. It is half cleared out to Ilkay Gundogan, whose first touch takes him past the covering defender but it's just too heavy to allow him to get a shot off. City keeping patient as Sergio Aguero crosses but Raheem Sterling can't get on the end of it.

Pat Nevin
Ex-Chelsea winger in Seville for Radio 5 live

A stunning save by Loris Karius. One of the best saves you will see all week, maybe all month. In a period of two minutes Liverpool should be behind now.

Glorious opportunity, Sevilla should be level.

Striker Wissam Ben Yedder threads the ball through to Nolito inside the box.

The ex-Manchester City player shows remarkable composure to turn inside of Joe Gomez, but his low shot is brilliantly tipped onto the post by Loris Karius.

The Liverpool goalkeeper turns around and the ball rebounds nicely into his hands.

In the next move, Ben Yedder is through on goal, but scuffs his shot wide of goal.

Harry: Why has Klopp got us scoring from corners? That’s not the Liverpool way!?

Richard: Brilliant start for Liverpool. Really hitting form. Now let’s see if they can defend....

Apoel keeper Nauzet Perez was able to carry on after that early injury scare and he hasn't had much to do. He saved a looping shot from Dani Carvajal but Real have been restricted so far.

Pat Nevin
Ex-Chelsea winger in Seville for Radio 5 live

Sevilla are not causing any problems. Liverpool look comfortable.

As if Bevo doesn't know what spending the day in a Manchester pub does to you.

The Dutch side have held their own so far without causing any trouble to Manchester City. Ederson is playing a long, long way forwards at the moment.

The Borussia Dortmund players do not look like they have fed their boots today, as Andriy Yarmolenko scuffs a shot which dribbles into the hands of Hugo Lloris.

Chris Bevan
BBC Sport at Etihad Stadium

The Feyenoord fans are a noisy bunch, even if their side are not giving them much to shout about on the pitch

They booed the City players when they came out, booed the City team when it was read out, have just told the City fans what they think of their support (they don’t think it’s very good, or loud) and just angrily booed the referee too when a decision (for a throw-in) went against them.

They have kept up some sort of wave or chant since the game started too - I guess that’s what spending the day in a pub in Manchester city centre does to you - but are currently getting drowned out by a rendition of 'Blue Moon'.

Pull it back!

Sevilla play their best passage of the match so far as former Manchester City man Nolito holds the ball before playing in skipper Sergio Escudero in the box.

The full-back is in two minds, whether to shoot across the goalkeeper into the far corner or pull the ball back for a team-mate.

He does neither, plonking a shot into the side-netting.

Andrew: Monaco are showing the rest of European football exactly what happens when you sell almost the entirety of your domestic league championship winning side.

Image source, Reuters