Postpublished at 16:05 British Summer Time 6 August 2017
Chris Sutton
Ex-Chelsea striker at Wembley for 5 live Sport
Some of the Arsenal players are celebrating already...
Summary
Gunners scored with all four of their spot kicks
Courtois & Morata missed target with penalties
New Arsenal signing Kolasinac with header to level
Pedro straight red after tackle on Elneny
Chelsea's Moses slots in the opener from close range
Watch in-play clips on the website
Postpublished at 16:05 British Summer Time 6 August 2017
Postpublished at 16:05 British Summer Time 6 August 2017
Big chance for Arsenal now...
MISSED PENALTY - Alvaro Moratapublished at 16:05 British Summer Time 6 August 2017
Arsenal 2-1 Chelsea
Drills it wide. Poor.
Postpublished at 16:05 British Summer Time 6 August 2017
Chris Sutton
Ex-Chelsea striker at Wembley for 5 live SportWhat a terrible penalty from Courtois. He goes for power but blazes clean over.
MISSED PENALTY - Thibaut Courtoispublished at 16:04 British Summer Time 6 August 2017
Arsenal 2-1 Chelsea
Interesting move.
He hits it some way over the crossbar.
Image source, ReutersPostpublished at 16:04 British Summer Time 6 August 2017
And now two in a row for Chelsea...
Postpublished at 16:04 British Summer Time 6 August 2017
Chris Sutton
Ex-Chelsea striker at Wembley for 5 live SportIt is not that difficult is it? Come on guys.
GOAL - Nacho Monrealpublished at 16:04 British Summer Time 6 August 2017
Arsenal 2-1 Chelsea
Sends the keeper the wrong way.
Postpublished at 16:03 British Summer Time 6 August 2017
So now Arsenal go again...
GOAL - Theo Walcottpublished at 16:03 British Summer Time 6 August 2017
Arsenal 1-1 Chelsea
Strokes it smoothly into the corner. Top class.
Image source, Getty ImagesGOAL - Gary Cahillpublished at 16:03 British Summer Time 6 August 2017
Arsenal 0-1 Chelsea
Long approach, powerful shot into the net.
Postpublished at 16:02 British Summer Time 6 August 2017
Gary Cahill is first up to take a penalty...
Postpublished at 16:02 British Summer Time 6 August 2017
Conor McNamara
BBC Radio 5 live commentatorGulp... A step into the unknown... I've never commentated on an ABBA-system penalty shootout before... Listen live on BBC Radio 5 live.
Image source, ReutersPostpublished at 16:02 British Summer Time 6 August 2017
Both Antonio Conte and Arsene Wenger are in deep discussions with their players, presumably nailing down the order of penalty takers.
Watch: A 'forward's challenge'published at 15:59 British Summer Time 6 August 2017
You can make your own mind up about the Pedro red card by watching the video below.
Postpublished at 15:58 British Summer Time 6 August 2017
What is ABBA, you may ask. The Swedish pop group are not about to make a sudden appearance, instead it is the penalty system that is being trialled.
The system, based on the format used in tennis tie-breaks, sees the team going first in the shootout taking one spot-kick before their opponents take two in succession.
Each team then takes two in a row until we have a winner - AB BA AB BA, hence ABBA.
FULL-TIMEpublished at 15:57 British Summer Time 6 August 2017
Arsenal 1-1 Chelsea
All over at full-time so to penalties we go. Now we get to see ABBA...
Postpublished at 90+3 mins
Arsenal 1-1 Chelsea
End-to-end as both sides go for it.
Alvaro Morata wins a free-kick for Chelsea, Cesc Fabregas swings it in but the offside flag is up for Antonio Rudiger. Then, Cesar Azpilicueta gets a vital touch to just take the ball away from Theo Walcott, who was through on goal.
Watch: Kolasinac scores on debutpublished at 15:53 British Summer Time 6 August 2017
It wasn't Lacazette but an Arsenal player has scored on debut - here's Sead Kolasinac's equaliser for the Gunners.
Postpublished at 90 mins
Arsenal 1-1 Chelsea
It's Arsenal doing all the pressing as we enter the first of five minutes added on, Theo Walcott scuffing an effort wide.