Even when Forest do get the ball, they get next to know time on it because of the counter-press. It's a sign of the appetite of these Arsenal players.

Arsenal fans will be enjoying this. It is not really enough of a contest right now to really blow the neutrals away, though.

Forest are just hanging in there.

Off the line!

Gabriel Martinelli almost has his second as a pull-back from Granit Xhaka is met by the Brazilian, steered goalwards and punted away by Renan Lodi.

It's just a matter of time, the way this is going.

Forest finally get a sniff of possession in the Arsenal half. It doesn't last long, though.

Arsenal had just over 74% of possession in the first 15 minutes. Forest are having to focus all their energy on stopping 1-0 becoming 2-0 and more.

Saka is back on after some treatment and the game continues.

One to keep an eye on.

Glenn Murray
Former Crystal Palace striker on BBC Radio 5 Live

Saka hasn't looked comfortable since Renan Lodi decided to leave one on him. Yes he's got an assist but obviously his health and wellbeing for Arsenal and England will be at the forefront of his mind.

Oh. Oh no. This could be bad news for Arsenal and England.

Bukayo Saka is down and looking very unhappy. The physio is on in a flash.

Bukayo Saka is having fun.

He cuts inside and even with a fall manages to poke the ball to Gabriel Jesus. The Brazilian's shot has the sting taken out of it by a Forest defender and the chance is gone.

Steve Cooper began the game sat down. He's not now. He's pacing and pointing and rubbing his cheeks. The universal signs of a worried manager.

Glenn Murray
Former Crystal Palace striker on BBC Radio 5 Live

Arsenal are in the ascendency at the Emirates so far.

From a Nottingham Forest perspective, they have to stay in the game. You can't ship two or three goals early on.

Image source, Getty Images

Takehiro Tomiyasu is the latest to see a glimpse of goal, but his flying volley from the corner is deflected over.

A scramble from the subsequent set-piece is eventually ended by a clearance from Cheikhou Kouyate.

The openings continue to come.

Bukayo Saka dinks a ball into the middle but Martin Odegaard has to settle for a corner.

Arsenal are too quick. Too smart.

They work an opening for Gabriel Jesus in the box but is forced to set up Thomas Partey for a blocked shot.

One-way traffic.

Forest with a chance!

Arsenal give the ball away on the edge of their own box and it invites Remo Freuler to fire a shot straight at Aaron Ramsdale.

Glenn Murray
Former Crystal Palace striker on BBC Radio 5 Live

Arsenal are moving the ball quickly which is extremely important when you have people sat in.

It almost isn't 1-0 anymore!

Gabriel Jesus has a glance at the far corner and just fails to find it with a curling shot from inside the box.

Glenn Murray
Former Crystal Palace striker on BBC Radio 5 Live

It's a beautiful goal by Arsenal and Nottingham Forest will be bitterly disappointed with that. it comes to Saka who chops back on his left foot. He knocks in a low inswing cross. Martinelli flashes across that front post and nods the ball into the far right hand side.

Image source, Getty Images

A minute ago, Forest fans were taunting their Arsenal counterparts with 'champions of Europe, you'll never sing that'. Now it's all '1-0 to the Arsenal'.

If Forest aren't careful, it won't be 1-0 for long.