Four devastating minutes of attacking flair ended Sheffield United's gritty resistance and provided more tangible proof that Arsenal are back.
This was far from convincing, far from pretty. But following their first defeat of the season at champions Liverpool on Monday, the Gunners have returned to winning ways.
That is all that will matter to Mikel Arteta. Bukayo Saka and Nicolas Pepe provided the telling blows as Arsenal withstood a brave Sheffield United fightback to clinch victory.
MATCH FACTS AND PLAYER RATINGS
ARSENAL (3-4-2-1): Leno 6; Luiz 6.