Double change for Arsenal as Alex Oxlade-Chamberlain and Santi Cazorla replace Mesut Ozil and Aaron Ramsey. Too little, too late?

There are 29 minutes of normal time left.

Raheem Sterling works over a neat cross from the left - but nobody can quite connect. Frustration grows on the Kop...

Image source, PA

This is ridiculous! Dortmund nearly score from deep inside their own half again, they cut through Arsenal time and again. Arsenal are defending like a dad on a new console game, befuddled and bewildered, nobody's told them which button you have to press to sprint.

This time it comes from goalkeeper Roman Weidenfeller, who just chucks it to Pierre-Emerick Aubameyang on the halfway line and he hares away from Laurent Koscielny, so much pace, so direct, they can't get near him and the striker from Gabon then thuds a rising shot against the top of the crossbar.

Brilliant to watch. Arsenal's defending is nightmarish though...

Wojciech Szczesny is certainly earning his match fee, again called into action to keep out a drive from Greek defender Sokratis Papastathopoulos.

Ajay in London: Good half time team talk from Wenger then...

Andrew from Richhill: Great attacking football from Borussia Dortmund, but yet more pathetic defensive positioning and urgency from Arsenal. It begs the question, what has Steve Bould been doing with this sorry lot on the training ground?

John Hartson
in Dortmund for 5 live Sport

"It's all Dortmund. You'd think Arsenal would have been the team to come out and press and create chances. It's been the worst possible start to the second half for the Gunners."

While Arsenal chase yellow shadows in the Ruhr valley, Liverpool toil at Anfield. Right-back Javi Manquillo has their latest chance from Jordan Henderson's pass but whacks his shot way into the Kop. First few signs of nerves?

Image source, Reuters

Aashish:, external What did Arsene say to them? More of the same?

Ryan Mould:, external One day Wenger will realise it is OK buying attacking players, but they are useless if you don't have a half-decent defence.

Adam Palethorpe:, external Sack him now please. Our board is too sentimental. No power in our midfield and nothing defensively stable about us.

The first 'Sack Wenger' tweet of the evening...

Only a strong wrist from Wojciech Szczesny keeps it down to 2-0. Ciro Immobile rattles in the drive and it's a fine one-handed save from the Polish number one. Jurgen Klopp is in full high-energy mode down there on the touchline and who can blame him? His side look streets ahead.

Image source, Getty Images

John Hartson
in Dortmund for 5 live Sport

"Again, Arsenal's defence was all over the place. Pierre-Emerick Aubameyang ran off the shoulder of Per Mertesacker, and Laurent Koscielny tried in vain to cover back. It's 2-0 to the hosts and it's what they deserve, really. They have been so much better than Arsenal on the night."

More rubbish defending from Arsenal, enough to knock George Graham sick, and they are 2-0 down and all at sea. Substitute Matthias Ginter pops a straight ball over the top, Per Mertesacker and Wojciech Szczesny get in each other's way, neither deals with it, and Pierre-Emerick Aubameyang is able to skip around the keeper and scuff it over the line.

To add injury to insult, Laurent Koscielny slides into the post as he tries to clear it. Phil Babb-style.

Image source, AP

Image source, Getty Images

Liverpool start the second half in positive style as first Philippe Coutinho and then Jordan Henderson shoot wide from range.

Game on in Germany, where Arsenal swiftly kick it out of play.

Top-of-the-table Burton Albion trail 2-0 at AFC Wimbledon and their unbeaten League Two record looks under threat. Matt Tubbs and Adebayo Akinfenwa scored the goals, with the latter notching his first for the club.

At the foot of the table, managerless Carlisle trail 1-0 to seventh-placed Shrewsbury with Jermaine Grandison's netting just before the break.

Fifth-placed Cheltenham Town suffered their first defeat of the season at the weekend and will find it tough to bounce back after having midfielder Jason Taylor sent off and being held 0-0 by visitors Southend.

Back under way at Anfield.

Robbie Savage
5 live Sport

"It was pathetic defending from Arsenal for the Dortmund goal. Kieran Gibbs, for example, sprinted back and yet made no challenge. And the keeper didn't even dive for it. Without a central defensive midfield figure, Arsenal's defending tonight has been pathetic.

"As for Danny Welbeck, was his technique right with his shot? The best strikers in the world score those, and that's why there's a debate about Welbeck."

As for Liverpool, it's been another largely frustrating evening thus far. Take Daniel Sturridge and Luis Suarez out of the team and the attacking spark goes. Who would have guessed?

Leyton Orient manager Russell Slade has been told he has one game to save his job and his team trail 14th-placed Notts County 1-0 thanks to a Zeli Ismail penalty.

Meanwhile, league-leaders Bristol City struck first at Port Vale as expected with Aaron Wilbraham turning in his sixth goal of the season to give the visitors a 1-0 lead.

Second-placed Peterborough have got the goal their efforts deserve at Gillingham, with Jon Taylor cancelling out Cody McDonald's header just before the break.

I don't think many teams will come away from Dortmund with any points this season - but Arsenal have had their chances. They've had a chance anyway - great opening for Danny Welbeck but his finish was poor. Can he be more clinical?

Jonny Mango:, external Everything wrong with Arsenal summed up within 2 minutes. Poor finishing and even worse defending