Arsenal thrashed West Brom 4-0 at the Hawthorns on Saturday evening.
Defender Kieran Tierney's excellent solo run and curling finish put the Gunners in front in the first half, before the impressive Bukayo Saka rounded off a stunning passing move to make it 2-0.
Alexandre Lacazette added the third and fourth goals after the break - smashing in a rebound from Emile Smith Rowe's shot before he was set up by Tierney.
It was Arsenal's third league victory in a row after they had failed to win their previous seven.
Gunners manager Mikel Arteta beamed afterwards: "We had a big week, three games in seven days, and we managed to win them and everything looks much better. It was difficult conditions but the team looked sharp from the start. It's a big win.
"After the results we had before we had to lift things straight away. Now we have got some discipline back. We look more creative in the final third and we look solid at the back."
