The hosts are struggling to create in Germany.

It has been a classic Jose Mourinho side display from Roma so far.

Just under half an hour of normal time remaining.

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It's becoming a bit more frantic now. AZ are opening up because they HAVE to score. West Ham are starting to get more opportunities on the break. The crowd have been ruffled up by those yellow cards for timewasting.

Neil Lennon
Former Celtic midfielder on BBC Radio 5 Live

Absolutely ridiculous decision to book Thilo Kehrer. Come on ref.

Thilo Kehrer is shown a yellow card for timewasting. The referee isn't having any of it.

Neil Lennon
Former Celtic midfielder on BBC Radio 5 Live

That's very disappointing, two corners West Ham have had and they've hit the first man with both of them.

David Moyes will be really angry about that because it is a really good opportunity for them to put pressure on AZ.

Aaron Cresswell's corner comes to nothing for West Ham. The hosts break down the left with pace and Vangelis Pavlidis fizzes it dangerously towards the near post. Alphonse Areola has to make a smart save but the flag goes up seconds after for offside.

A cross from the right is met by the head of Juventus defender Bremer and just grazes the outside of the post on its way behind.

Good game this.

Tomas Soucek is in the book for timewasting but Jarrod Bowen wins a free-kick near the touchline shortly afterwards.

Neil Lennon
Former Celtic midfielder on BBC Radio 5 Live

My first instinct was that it was a penalty.

Evangelos Pavlidis gets in between the two centre-backs too easily.

Nayef Aguerd didn't get any of the ball.

Eeeek. A long ball is played over the top for Vangelis Pavlidis. He is trying to wriggle away from Nayef Aguerd but the defender comes sliding in to stop him. It was a very risky challenge and he gets away with it. A brief VAR check confirms no penalty.

BIG MISS!

Moise Kean chests into Adrien Rabiot and the France midfielder runs through on goal.

He has the chance to offload it but doesn't get closed down and decides to shoot.

It's across goal but it goes just wide of the far post.

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Basel have retaken the lead in their Europa Conference League semi-final tie with Fiorentina.

It's a decent strike from Zeki Amdouni and he runs straight over to the manager to celebrate.

Declan Rice curls it from distance and it's tipped around the post by Mathew Ryan.

That's better!

A deflected pass falls into the path of Bryan Gil.

His first touch forces him a touch wide and Wojciech Szczesny is able to get down and keep out his drilled effort across goal.

Tijjani Reijnders slides it straight down the middle for Vangelis Pavlidis and he almost gets a shot off but Alphonse Areola was quick off his line. He needed to be...

A dodgy bounce for goalkeeper Mathew Ryan as a West Ham corner is lifted in but it's unchallenged and he gathers it in safely.

Neil Lennon
Former Celtic midfielder on BBC Radio 5 Live

West Ham are second best at the minute, they're half a yard slower to everything, whether it be a pass or a knockdown.

They're just inviting pressure on here, they cant seem to get out of their own half.

They're got to keep it for a couple of passes, they've made a dreadful start to the second half.

This is what West Ham are waiting for - the opportunity to break. Michail Antonio does well to hold it up but Said Benrahma and Lucas Paqueta can't quite link-up on the left.

Sven Mijnans beats Aaron Cresswell on the right and Declan Rice backing up. Nayef Aguerd eventually comes across to concede the corner, which is headed away at the near post.

Nervy times for West Ham.

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The smoke is arguably as bad as ever but the referee decides we can play again.