About 15 minutes to go before half-time. Spurs are growing into this - they looked shell-shocked after the goal. Will news of PSV's lead have filtered down?

Christian Eriksen drives forward. Danny Rose is open down the left.

His low cross just runs past Son Heung-min - agonisingly close. Not quite Gazza at Euro '96 but something of the sort.

James: Andy Robertson is one of the best attacking left-backs I’ve ever seen. If he was English the press would talk about him constantly.

jackabout: Danny Rose is a liability, how is he playing in front of Davies?

Tom: Final whistle please! #coys

The battle for top spot in Group A is on. Borussia Dortmund lead Monaco 1-0, taking the German side above Spanish side Atletico Madrid and to the summit of the standings. Raphael Guerreiro with the goal.

Atletico are currently 0-0 at Belgian side Club Brugge.

No more goals in Belgrade to report. Yet. You feel PSG will go on to get another before the break though, such is their dominance.

Marco Verratti warms the palms of home keeper Milan Borjan from distance.

Virgil van Dijk - on a yellow - fields a testing Napoli cross. Very composed under pressure the man.

Trent Alexander-Arnold cuts the corner clear at the far post before play falls to Kalidou Koulibaly - the big defender fires a left-footed drive across goal but it's off target and he is offside in any case.

Phil McNulty
BBC Sport chief football writer at Anfield

It's a bitterly cold night on Merseyside but temperatures are rising after those early exchanges.

Liverpool do, however, just seem to be starting to get a grip of things and are starting to exert some concerted pressure.

Image source, Reuters

Great interception by Nelson Semedo - just in front of Christian Eriksen from Toby Alderweireld's through ball. Dele Alli was in open space for the overlap.

Some brighter signs for Spurs.

Image source, Getty Images

Chris Waddle
Ex-Spurs and England winger on BBC Radio 5 live

Napoli are tiring and a few of their players are starting to feel the pace. Liverpool are starting to get more on top now.

Spurs have failed to keep a clean sheet in eight of their past nine away games in European competition.

Corner ball for the away side. Christian Eriksen sends it over. But again the delivery is not quite right and doesn't beat the near post.

Sadio Mane smashes in a cut-back from the right wing but he was miles offside in doing so. Big cheers quickly smothered.

Trent Alexander-Arnold has been a busy boy so far tonight. The Liverpool right-back has had more touches than anyone else on the pitch so far, providing an attacking outlet on the right flank...

Image source, #bbcfootball

...while also having to snuff out the Napoli threat on the left. That appears to be the favoured attacking approach of the Italian visitors.

Image source, #bbcfootball

Ousmane Dembele at the centre of things again. He swings in a a cross that Harry Kane does well to need clear.

Christian Eriksen and Dele Alli exchange smartly under high pressure in the centre-circle - no easy routes out.

Son Heung-min is down and needing treatment.

Chris Waddle
Ex-Spurs and England winger on BBC Radio 5 live

Liverpool have started with a high tempo, but Napoli have matched them so far, and there is nothing between these two sides.

Image source, EPA

Ousmane Dembele was late to training again the other day and there is a lot of chat about his attitude.

On the pitch he's looking faultless. A real handful for Danny Rose at left-back.

Khan: And there you go, the ref that has refereed Liverpool 5 times (all defeats for the Reds) has given a dodgy decision

Matthew: Van Dijk should have walked there. That’s a horrific tackle.

Paul: Let's be honest whoever gets through out of Spurs and Inter has absolutely no chance of winning the Champions League. They're just teams that are there to make up the numbers

Dries Mertens is back on the pitch after a brief bit of treatment. It was a bad challenge from Virgil van Dijk.

Mohamed Salah is brought down in the corner by Mario Rui. Free-kick Liverpool. A chance to deliver into the box.

In it swings - too long and Jordan Henderson hacks the rebound into Napoli bodies.

Dele Alli hooks a clear deep free-kick towards safety from the far post. Thomas Vermaelen was lurking. Spurs are having to do a lot of defending, even without Lionel Messi on the park.

But they are heading through to the knockout stage as things stand - thanks to PSV.

John Murray
BBC football correspondent at Anfield

That booking means Virgil van Dijk will miss the next match, should Liverpool go through.

Image source, AFP

Chris Waddle
Ex-Spurs and England winger on BBC Radio 5 live

Liverpool have just started to get on top, but they are giving the ball away a little too easily and the hosts are pressing high.

Virgil van Dijk goes in the book. It looks a bit harsh at first glance, but there is a bad follow through. He slides in on Dries Mertens, who is clattered on the ankle.

Image source, Getty Images