After their impressive 0-0 draw at Stamford Bridge versus Chelsea, much of the onus was on Arsenal to build from that game and easily dispatch of West Brom on Monday night.
In the end, Arsene Wenger's side managed to record a 2-0 victory but in the first-half, they rode their luck against Tony Pulis' side.
Shkodran Mustafi could have been sent off for a rash tackle in the box that didn't even earn a penalty and Nacho Monreal made a spectacular goal line clearance from a Jay Rodriguez header.
But, after a few scares, the Gunners finally settled into their rhythm and did beat the Baggies, with summer signing Alexandre Lacazette scoring both goals.
The first came after Alexis Sanchez's free-kick was deflected onto the bar by Ben Foster, with the Frenchman heading in from close range.
In the second period, Lacazette calmly tucked away a penalty after Allan Nyom had fouled Aaron Ramsey.
The French International striker now has four Premier League goals for the season with all of them coming at the Emirates.
He was no doubt in jubilant spirits after his brilliant performance and he took to Twitter to post a brilliant reaction.
Hilarious stuff from Lacazette, who has already shown Premier League defenders that he is going to be a nightmare to face this season.
Spanish right-back Hector Bellerin also joined in the fun, posting a tweet with a picture of him with the caption saying 'Everything Laca', paying tribute to his match-winning colleague.
BELLERIN JOINS IN
The only slight negative for Lacazette was that he was substituted late in the game before he could seal his first hat trick for the club.
Olivier Giroud was brought on and Wenger has explained why he decided to take his record signing off.
“I took him off because he was tired,” Wenger told Standard Sport. “I would have loved him [to score a hat-trick]… he had an opportunity. But I gave him the penalty as well you know. Overall what you want is to win the game and not take any gamble.
“If they come back to 2-1 it can be nervy in the end so when a guy is a bit tired there’s no need to. They’re very strong on set-pieces, when you have Giroud on the bench, you know we might have to defend them or Giroud could score a third goal.”
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