Arsenal survived Myles Lewis-Skelly's controversial red card to snatch a 1-0 win at Wolves on Saturday.
The Gunners, without ill captain Martin Odegaard, had Lewis-Skelly contentiously sent off for tripping Matt Doherty to stop a Wolves counter-attack in the 43rd minute.
It was a cynical challenge but Arsenal were furious, protesting that the tackle was too far from goal to warrant a red card.
The Premier League Match Centre confirmed on social media that the 18-year-old defender was sent off for "serious foul play".
But Wolves were also reduced to 10 men in the 70th minute when Joao Gomes earned a second booking for a foul on Jurrien Timber.
And Italy defender Riccardo Calafiori won it for Arsenal in the 74th minute with a half-volley that went in off the far post.
