The hosts are knocking on the door.

The ball drops loose for Sardar Azmoun on the edge of the area but he drags his effort just wide of the far post.

Will they get a better chance?

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A HUGE chance to confirm victory for West Ham!

Michail Antonio plays a one-two with Tomas Soucek, it comes to Nayef Aguerd unmarked on the right side of the box and he completely scuffs it.

Any clean contact and that was a goal. Ahh, what a chance.

Nervy!

A chipped ball in is cushioned down by Thilo Kehrer at the back post with nobody near him. He was trying to pass it to Alphonse Areola and almost pokes it over his own goalline. The goalkeeper has to stretch a leg out desperately to stop it!

Neil Lennon
Former Celtic midfielder on BBC Radio 5 Live

It's a bit scrappy now which will suit West Ham and take the sting out of the game.

I don't always like that tactic because it invites pressure but at the minute it's ok.

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Chris Smalling is on for Jose Mourinho's Roma.

Can he get them over the line?

Time is starting to run out for Alkmaar and they're rushing things a little. Mayckel Lahdo can't reach a wayward pass from Vangelis Pavlidis.

A teasing Moussa Diaby cross from the right drifts past everyone and goes out for a goal kick.

The hosts have struggled to create in this half.

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Jesper Karlsson tees up Jordy Clasie but he's miles out and his strike sails over the bar.

Myron van Brederode is replaced by Mayckel Lahdo on the right for AZ Alkmaar.

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On comes Pablo Fornals. He replaces Said Benrahma.

A huge chance!

Jarrod Bowen wins it in AZ's half and is able to carry it into the box. He rounds the keeper but takes it wide and he can't find a team-mate with the pull-back.

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Fiorentina have scored again! They retake the lead in Switzerland, levelling the tie at 3-3.

Declan Rice battles in the middle and emerges with the ball, beating two players in the process. It's pumped up to Michail Antonio but he can't keep it in play.

Pablo Fornals is being prepared by David Moyes.

Dani de Wit is on for Sven Mijnans for AZ Alkmaar. His first involvement is an intricate one-two before whipping in a teasing cross but he's just offside.

Neil Lennon
Former Celtic midfielder on BBC Radio 5 Live

West Ham haven't really affected Mat Ryan in the AZ goal in the second half, they played better in the first half.

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Sam Beukema almost slides it through in the box but it rolls out for a goal kick.

West Ham really digging in but so far it's been a defensive masterclass.

Jesper Karlsson blasts one over the bar.

AZ Alkmaar are going to make some changes shortly.

Another AZ attack is cleared. Michail Antonio beats a player on the right with his pace but is closed down by the centre-back. AZ go straight up the other end again and Alphonse Areola has to make a good save!

Juventus send for attacking reinforcements.

Dusan Vlahovic and Federico Chiesa are on.