Two-goal Hazard - "I think it's a goodbye"
Giroud heads in opener for Chelsea against former club
Pedro doubles Blues' lead before Hazard scores from spot after foul on Giroud
Substitute Iwobi fires in for Gunners before Hazard strokes home his second
Victory gives Chelsea boss Sarri his first major trophy
Chelsea 4-1 Arsenal
He's released a single with the drummer from Queen though. Every cloud.
And Petr Cech now makes another great save to push away Willian's low shot. Arsenal's defence is having another bad night.
They've been as badly behaved after midnight as the Gremlins.
Text 81111 (UK only).
Have to feel sorry for Petr Cech, four goals down and none of them he could do anything about. It's sad for a true legend of the game and incredible professional to finish his career this way
Hayden, Ely
Image source, PAChelsea 4-1 Arsenal
Alan Pardew
Former Newcastle and West Ham manager on BBC Radio 5 Live
How ironic that Eden Hazard's now on a hat-trick. Only 10 minutes ago he hadn't scored. It goes to show how quick this game can change.
And Arsenal, they score and get that lift, so to concede again straight away is a terrible blow for them.
Image source, AFPChelsea 4-1 Arsenal
Arsenal send on Joe Willock for Mesut Ozil. Who, I have to be honest, was utterly anonymous.
Chelsea 4-1 Arsenal
Can I just shock you? Ross Barkley has replaced Mateo Kovacic.
Chelsea 4-1 Arsenal
A shot at each end as this game just falls apart in terms of discipline and shape. Eden Hazard has a curler pushed away by Petr Cech and then Pierre-Emerick Aubameyang fires over.
Chelsea 4-1 Arsenal
Alan Pardew
Former Newcastle and West Ham manager on BBC Radio 5 Live
Arsenal get themselves back in the game then make another mistake on that right side. Hazard gets the turn-over, puts Giroud in and Giroud's pass back is absolutely exquisite. Hazard is cool as you like, sidefoot, 4-1.
#bbcfootball
Hassan: No ComeBaku
Pete: The Arsenal defence has more holes in it than a colander! Embarrassing!
Bezaleel: Sorry, no coming back from this thrashing Gunners. Hazard strikes twice like lightning.
Chelsea 4-1 Arsenal
Five goals in 23 minutes. That's more like it!
Eden Hazard
Comeback; stalled.
At half-time I rather fancifully called for a 4-3 classic and we're on for it now! What a second half. And what a goal that is. Eden Hazard sends Olivier Giroud into the penalty area, wide left. He brings out a lob wedge to lift the ball back into the path of Hazard, and he controls a calm finish past Petr Cech and into the back of the net.
Beautifully taken.
Image source, PA#bbcfootball
Acedcnut: These 3 -0 comebacks are getting really boring now.
Russell: Pick that one out! Having gone the correct number of goals down, this season has taught us that Arsenal will now come back to win
Chelsea 3-1 Arsenal
We haven't had Kovacic-Barkley just yet but it's time for the Willian-Pedro shuffle. Brazilian is on.
Alex Iwobi
Have some of that!
What a goal that is! Out of nothing. Arsenal have a corner, it's not dealt with and Alex Iwobi, who's only just come on, lets it bounce about 22 yards out and then just nonchalantly sends a dipping shot into the far corner with the outside of his boot!
Wonderful, wonderful technique. Are we on for another sensational fightback...
Image source, PA
Image source, ReutersChelsea 3-0 Arsenal
Chris Bevan
BBC Sport at Olympic Stadium, Baku
The pocket of Chelsea fans opposite me - well, actually about a mile away on the other side of the athletics track - were still bouncing up and down in celebration of their side's second goal when the Blues were awarded the penalty that saw them add their third.
They are even more animated now, obviously.
#bbcfootball
Marwan: Didn't want to be in the Champions League next season anyway.... Distracts us from winning the league
Femi: Arsenal have been Baked in Baku
Alistair: How has Emery kept Ozil on the field? We've played with 10 men all game!!
Chelsea 3-0 Arsenal
Eden Hazard has scored 20 goals in all competitions this season for Chelsea, his best return for the club, surpassing his previous best of 19 in 2014-15.
He hasn't even been near his best tonight but he's still got a chasm of class between himself and the rest out there.
Alex Iwobi drives Arsenal forward and is tripped by Andreas Christensen - who is booked.
Chelsea 3-0 Arsenal
Unai Emery rolls the dice and sends on Matteo Guendouzi and Alex Iwobi for Nacho Monreal and Lucas Torreira, who looks close to tears in the dugout.
Text 81111 (UK only).
Unsurprising really - playing with 10 men, our 'creative genius' Ozil may as well not be on the pitch. Useless.
Chris, Surrey
Eden Hazard (Pen)
It looks like Eden Hazard will be signing off with a trophy and a goal bonus in the pocket.
The Belgian number 10 sends Petr Cech the wrong way and just passes it into the back of the net.
Image source, Getty Images
Image source, PAChelsea 2-0 Arsenal
This is a bad night for Arsenal. And getting worse...
Olivier Giroud is barged in the back after a good run from Pedro. Eden Hazard to step up...