Just in case you didn't know, if this game stays 1-1 after full-time, it will go to a penalty shootout as there has to be a winner.

Nice little test of character for the young ones!

Eddie Nketiah makes a clever run down the right and he is picked out superbly by Ainsley Maitland-Niles with a perfectly-weighted through ball.

The angle is too tight for the youngster and his shot dribbles into the hands of Antonio Adan.

Howard Smith: Smith Rowe is an anagram of Showtimer.

See, there you go.

Image source, Getty Images

Calum Chambers is the first man in the book. He was a little late in the tackle. Nothing too feisty, but then it is pre-season.

Arsenal can't keep hold of the ball at the moment. The ball is bouncing off knees in midfield, being pipped off their toes and knicked in the air.

The momentum is still in Atletico's favour.

Sead Kolasinac has played well too. He drives down the left but is hustled out of play just before he is able to pull the ball back into the box.

Matteo Guendouzi is my man of the match by the way. Agree?

Steady on Mark...

Arsenal's Matteo Guendouzi then follows.

Joseph Willock is his replacement. His brother Chris Willock also plays for Arsenal. Their third brother, Matthew, plays for Manchester United.

Lucas Perez only has to slip it into Jordi Osei-Tutu but his pass is far too heavy and Arsenal's attack breaks down.

Atletico then make a series of substitutions.

Matteo Guendouzi draws yet another foul from Thomas Partey. I like that kid.

The stadium camera then zooms onto the Arsenal bench, where Mesut Ozil is sat posing, and the crowd cheers with admiration.

Image source, Reuters

Atletico sense an opportunity here. They were building pressure when Arsenal made all those substitutions and they have continued the momentum here.

Angel Correa swings another cross into the box but Petr Cech picks it up comfortably. Ainsley Maitland-Niles then carries the ball forward but his touch lets him down at the crucial moment.

So just to confirm who is on the pitch for Arsenal...

Off: Holding, Bellerin, Smith-Rowe, Aubameyang, Nelson, Ramsey, Mustafi, Lacazette

On: Sokratis, Maitland-Niles, Perez, Nketiah, Chambers, Osei-Tutu, Mavropanos, Mkhitaryan

Image source, Reuters

Calum Chambers looked to have played Kevin Gameiro onside but the referee feels otherwise after the Atletico striker had made another dangerous run in behind the defence.

Arsenal need to hold their concentration following all of those changes.

Oscar Quintela also replaces Joaquin Munoz for Atletico Madrid.

Matteo Guendouzi and Sead Kolasinic are the only two Arsenal starters to stay on.

Goalscorer Emile Smith-Rowe was one of the eight players to trudge off. He will be delighted with his afternoon's work.

What did you make of his performance? Let me know using #bbcfootball

Image source, Reuters

Incoming changes... a whole team is waiting on the sidelines to come on for Arsenal. Aaron Ramsey hands the captain's armband to Petr Cech.

Atletico are coming at Arsenal thick and fast now. A corner is whipped into Rodri at the back post but his header is saved by Petr Cech.

He is the target again on the second delivery but can't direct the header.

What was Aaron Ramsey thinking? You won't get away with that in the Premier League.

Image source, Getty Images

Juanfran tries to beat Sead Kolasinac on the right but the defender holds firm, using his body to shield the ball out of play.

But Atletico come straight back at Arsenal. Matteo Guendouzi is beaten on the byline but Aaron Ramsey picks it up in front of Petr Cech.

The midfielder then tries to dribble it in his own six yard box (whaaaaat?) and Atletico get it off him, fire two shots at Cech before a third bounces over the bar.