The Gunners look set to move up into the top ten in the coming week as a late brace from Alexandre Lacazette put the gloss on a dominant performance in the West Midlands.
Arteta’s team were on the front foot right from the start in this one with Sam Johnstone called into early action to deny Hector Bellerin and Bukayo Saka.
And with all the traffic heading in one direction it was only a matter of time before Arsenal edged ahead as Kieran Tierney netted a superb opener.
The Scotsman raided forward from full back, turned Darnell Furlong one way and then the other and curl home a beauty past Johnstone.
And with The Baggies unable to offer resistance, Saka tucked home a brilliant second.
Lacazette’s delayed pass released Emile Smith-Rowe and his cutback was buried by Saka.
Arsenal kept on coming and coming before the break with more Johnstone keeping the score down as he denied Lacazette and Rob Holding.
And the Arsenal avalanche showed no signs of slowly after the break before Lacazette finally made it three.
Saka was right at the heart of it once again Semi Ajayi deflected his cross onto the post before Lacazette pounced to tuck home.
Arsenal smelt blood in the final stages as Lacazette volleyed home Tierney’ cross for Goal No.4 as Sam Allardyce’s miserable start continues with The Baggies.
Full Time at The Hawthorns it’s West Brom 0 Arsenal 4