Arsenal FC beat Manchester United 3-1 after two late strikes at the Emirates Stadium on Sunday.
Arteta’s men equalised 30 seconds after Marcus Rashford’s first goal.
Declan Rice and Gabriel Jesus buried the game with their two late strikes.
Rice, a £105 million summer transfer from West Ham, scored his first goal for Arsenal in the 96th minute, after both clubs had complained about Stockley Park official Jarred Gillett’s rulings.
And in the final seconds, sub Gabriel Jesus sprinted away to slam home the deadly third with a stunning finish to secure a well-deserved victory for Mikel Arteta’s side.
First, Arsenal thought they had been denied a penalty on the hour when Kai Havertz was upended by Aaron Wan-Bissaka, only for an overworked Gillet to reverse ref Anthony Taylor’s judgment.
Then, in the 87th minute, an Alejandro Garnacho strike was written off by Gillett for a flimsy offside ruling that looked far from certain.
Rice, who had been outstanding in his deep-lying midfield role, chested down a Saka corner and past United keeper Andre Onana at his near post with the assistance of a Jonny Evans deflection to record Arsenal’s third win in four games.
Then, in the third, Jesus grabbed onto a Fabio Vieira pass and swiveled past Diogo Dalot.
Martin Odegaard had earlier quickly cancelled out Marcus Rashford’s first-half opening on a day when Arsenal had the better chances but looked vulnerable.
Here were two teams who had failed to impress in their first three games, and the opening exchanges were no exception.
Arsenal did the majority of the attacking, but after a bruising challenge from Rice won possession, Havertz absolutely duffed his effort from six yards out, irritating a huge portion of the Gunners crowd, before Lisandro Martinez denied Eddie Nketiah an easy chance.
Havertz’s day grew worse when his sloppy pass was intercepted by Christian Eriksen, who broke forward and found Rashford with an angled through-ball.
Rashford cut through from the left and curled a lovely shot inside the far post as Ben White stood against him.
You pondered what Roy Keane and Patrick Vieira, two legends of this game, would think of Havertz swooping over this midfield.
Nonetheless, Arsenal equalized within a minute when Nketiah fed Gabriel Martinelli, whose cut-back found Odegaard in space, allowing the skipper to ram his shot past Onana.
Saka was then cautioned for a nasty lunge at Bruno Fernandes, while he was being fouled by Dalot.
It was fractious and feisty, like Arsenal-United fixtures of old. All that was missing was any sustained degree of quality.
United, bang-average overall, always possessed a counter-attacking threat.
Arteta fumed, along with the vast majority of the Emirates, but United were buoyed by their let-off.
Martinez, their best player for the opening hour, had injured himself in a wild challenge on Nketiah, and was replaced by Harry Maguire as Rasmus Hojlund arrived for a debut in place of Martial.
And Ten Hag’s team began to show greater attacking ambition.
Havertz was put out of misery, hooked to make way for Fabio Vieira, while Jesus arrived up top.