A flying header by Aaron Ramsey and it's heading for the net. Jan Oblak sticks out a strong hand. Great save.

A draw that feels like a defeat for Arsenal if it stays like this. What can Arsenal produce in the closing stages?

Fernando Torres alert!

The former Liverpool and Chelsea striker is getting ready to come on.

How he would love to score!

Stefan Savic is on for Atletico. They've started running down the clock. A 1-0 defeat leaves the second leg wide open. Two-nil and it's a different story.

Andy Townsend
Ex-Republic of Ireland international on BBC Radio 5 live

Arsenal have played as well as I have seen them play for some time. They have taken the lead and they are now pushing to find themselves a bit more breathing space when they travel to Spain next week.

Another replay of Lacazette's goal. It gets better and better each time you see it. It's as though he has springs in his feet as he out-jumps the entire Atletico defence.

Corner to Arsenal.

Home fans are trying to suck the ball into the net. There's a huge noise inside the ground and Lacazette is asking more and more questions of Atletico's defence.

The Spaniards are hanging in. Their 10 men will be happy to escape here just one goal down.

Image source, Reuters

Luke: There it is! Lacazette! Beautiful skill by Wilshere

Johnny: Congratulations Arsenal you’ve managed to score against 10 men after 60 minutes with your 18th shot. World beaters.

Alexandre Lacazette has been superb for Arsenal. A really powerful presence.

He fizzes the ball across the six-yard area for Danny Welbeck but he can't connect. A glorious chance!

Arsenal are banging on the door for a second.

Image source, PA

Andy Townsend
Ex-Republic of Ireland international on BBC Radio 5 live

Exactly the right way to attack when you've got a numerical advantage.

Jack Wilshere plays a little one-two and he gets wide to the byline and that's how you stretch a team when they're one man down. The cross is stood up perfectly for Alexandre Lacazette to leap up and put his team in front. He hangs in the air and thumps it past Jan Oblak.

Clinton Njie has put Rudi Garcia's side two goals ahead at the Stade Velodrome. Dimitri Payet was again involved finding the Cameroon winger with the perfect pass.

And the former Tottenham man did the rest, with an assured first touch and composed finish into the bottom corner.

Image source, AFP

Brilliant skill by Mesut Ozil inside the Atletico penalty area almost leads to another Arsenal goal.

They're not shutting up shop. The Gunners want another.

Atletico react to falling behind by making their first change - Gabi for Gameiro.

Half an hour remaining of normal time. This is a superb defensive display by Atletico. Who is going to step up for Arsenal?

Atletico have nine players behind the ball. It's like a training ground exercise between attackers and defenders.

Arsenal are struggling to unlock this gritty Spanish defence and Atletico's travelling fans are getting louder and louder.

Kai: The only time Arsenal have a numerical advantage is when they are defending. Not when they counter, and not when they play slow motion power play.

John: Love how people still under-rate Atletico. One of the best defences in Europe won't be too worried about the likes of Welbeck.

Andy Townsend
Ex-Republic of Ireland international on BBC Radio 5 live

Atletico are so well organised that if you step back for a minute, all of a sudden there are eight players behind the ball.

That negativity can start to creep in when you think you should have an advantage but aren't getting anywhere. Arsenal have to stay patient but go for the jugular when they get an opportunity.

Image source, PA

Aaron Ramsey attempts to bend the ball beyond Jan Oblak but the Atletico keeper makes a comfortable save.

Alex Iwobi anyone?

Atletico are keeping the ball well and making Arsenal work hard for possession. It's a bit quiet inside the ground. A Gunners goal will change that!