That was a performance that Arsenal fans desperately needed to see.

The Gunners were in cruise control for much of the game against a poor Cherries side.

The home fans even had time to welcome back Alexis Sanchez.

Next stop the Europa League.

But for Bournemouth, they are only off the bottom of the league on goal difference.

Image source, Rex Features

All over.

Sanchez desperately tries to get on the scoresheet, shooting from outside the box which Begovic pushes around his post for a corner.

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Bournemouth desperately trying to get a goal back.

Jordon Ibe stands a cross up for Joshua King, who sees his header put over by Petr Cech.

Hector Bellerin breaks forward and he tries to find Sanchez with a low cross but Begovic collects.

Conor McNamara
BBC Radio 5 live commentator

Jermain Defoe has been substituted. He hit the post today, but that's as close as he got. So his record of having never scored at the Emirates continues... 11 games now at this stadium without finding the net.

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Francis Coquelin might have tweaked his hamstring here, quandary for Arsenal who have already made all three substitutes.

Coquelin heads down the tunnel and that's his day done, Gunners down to 10.

Can Bournemouth take advantage?

Image source, Rex Features

Sanchez with an instant impact, driving at the defence and playing a cute pass to Giroud, whose fierce shot was well saved by Begovic.

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Here is that change.

ON: Sanchez and Giroud

OFF: Lacazette and Danny Welbeck

Ovations for Lacazette and Welbeck, few boos for Sanchez.

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I don't want to stress out Bournemouth fans, but Alexis Sanchez and Olivier Giroud are about to come on.

Mesut Ozil lays the ball off for Francis Coquelin, but his goal-bound effort is deflected wide.

Lys Mousset on for Defoe.

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Ozil concedes a free-kick with a lunge on Jordon Ibe.

He takes the set piece himself, but it is ambitious, firing wide off Petr Cech's near post.

Conor McNamara
BBC Radio 5 live commentator

This has been so comfortable that some Arsenal fans have already passed me on the way to the exits, convinced that the job is done.

Last time these sides met it was Bournemouth who took a 3-0 lead, only to throw it away by conceding three times in the last 20 mins... There are 20 mins to go here now... Surely Arsenal aren't going to let this one slip...

Aaron Ramsey replaced by Francis Coquelin, who makes his 100th Arsenal appearance.

Bournemouth are having a go in this half, but Arsenal are looking to counter every time.

More goals in this one I suspect.

Danny Welbeck is played through and bursts into the box, before trying to chip Asmir Begovic for his hat-trick but it is just wide.

Bournemouth with a rare corner, but Jordon Ibe's delivery evades all of his team-mates.

Arsenal are taking Bournemouth apart, playing with a real swagger. Mesut Ozil tries his luck with a volley from a tight angle but it is just wide.