The 23-year-old shot-stopper has had a fine start to life at the Emirates and put in another superb display against Leicester City.
He pulled off one save which legendary Manchester United goalkeeper Peter Schmeichel revealed was the best he'd seen in years.
Ramsdale also thrilled with his impressive distribution, allowing the Gunners to break their opponents' press.
And another former Premier League goalkeeper, Mark Bosnich, reckons he's in such good form that he should be England's first-choice goalkeeper ahead of Jordan Pickford.
The ex-Chelsea and Manchester United star said: "What I saw yesterday was a goalkeeper that can win you games.
"Going long-term, when you're going for the big trophies, that makes such a huge difference.
"For me, the game is about men and moments and in those moments yesterday he was absolutely outstanding. Everyone knows what he can do, the hard thing is keeping it up."
He added: "He was outstanding yesterday. I looked at him yesterday and thought, 'that's England's number one at the moment."
Manager Mikel Arteta said after his star's performance: "He's playing really well and showing a lot of character and real moments of quality," the Spaniard said of Ramsdale, who won man-of-the-match for his display.
"Today, he saved us in two or three moments in the game when we need him but it's neccessary if you want to win games consecutively.
"There are many different ways to win football matches but individually you need big performances for sure."