Jermain Defoe goes so close to opening his Bournemouth account.

He meets Jordon Ibe's cross with a diving header which clatters the near post, the ball ricochets back but he can't connect.

So close and the first attempt for Bournemouth in the match.

Worry for Laurent Koscielny, who is rolling around in pain and appears to have been trodden on by Joshua King.

But he is soon back to his feet.

Back under way.

Simon Francis on, Tyrone Mings off.

No sign of Sanchez yet.

The teams are coming back out, Asmir Begovic is in an animated conversation with Steve Cook.

Image source, Opta

The majority of Arsenal's attacking has come down their left-hand side against Bournemouth.

Sead Kolasinac has been particularly effective (see touch map below), hugging the touchline and putting in a number of dangerous crosses.

Image source, Opta

Conor McNamara
BBC Radio 5 live commentator

Image source, Getty Images

It's now raining really heavily at the Emirates, but even the Arsenal fans in the front rows don't care that they are getting wet. The early goal from Welbeck set the tone. Lacazette struck the second to the top corner and in truth Arsenal could have scored several more.

This is the wonderful redemptive power of football: No matter how poor their team were against Liverpool last time out, Arsenal fans are enjoying what they are seeing here.

But how long will the feelgood factor last? Is this just papering over the cracks? Or could this be a kick-start for Arsenal's season? For the home fans, it's the hope that kills you.

Arsenal in cruise control.

Bournemouth heading for their fourth successive defeat.

Aaron Ramsey plays in Sead Kolasinac on the left but Bournemouth just manage to clear the danger and it goes out for Arsenal's sixth corner.

Image source, Getty Images

Bournemouth are struggling to get out of their own half at the Emirates.

Josh King (17) has been the most advanced player so far, while Jermain Defoe (18) has had only seven touches.

Image source, Opta

Arsenal are as comfortable as you like as the rain starts to come down at the Emirates.

Problem for Bournemouth is a certain Alexis Alejandro Sánchez Sánchez is waiting on the bench.

Wonderful football from the home side.

Aaron Ramsey passes to Hector Bellerin who floats a boat to Kolasinac at the far post and the full-back meets it with a volley that is deflected out for a corner.

Ryan Fraser has not recovered from that earlier challenge by Hector Bellerin and is replaced by Jordon Ibe.

It could have been three.

Begovic fails to deal with Mings' back pass and Welbeck pressures his clearance.

The ball falls to Lacazette but Begovic makes amends with a diving stop which is so hard it bursts the ball.

Begovic is fuming.

Conor McNamara
BBC Radio 5 live commentator

Stat for you: That's now 8 goals in his last 8 club appearances for Alexandre Lacazette

Joshua King drives down the right and ends up on the floor after a tussle with Nacho Monreal.

Corner to Bournemouth who can't find any opening in what is looking a very well organised Arsenal defence.

Corner to Arsenal.

Granit Xhaka swings in a high cross but it is headed away by Steve Cook.

In terms of Arsenal's formation, they are playing a back three, anchored by Shkodran Mustafi, who is sitting very deep.

Hector Bellerin catches Ryan Fraser and we have a brief pause in play.

Image source, Getty Images

Arsenal are enjoying 66% of possession at the moment and Bournemouth are yet to have a shot.

Image source, Getty Images