Arsenal goalkeeper Petr Čech has been brilliant since he joined the Gunners.

An £11m move saw him move across London from Chelsea in the summer, and a number of stunning saves have justified the transfer fee.

However, it didn’t all start as he would have wished. The opening weekend of the season and Čech’s first competitive game at the Emirates Stadium as an Arsenal player, he rushed out of his goal and allowed Cheikhou Kouyaté a simple header to give West Ham United the lead.

“It was just a coincidence, in a way. We were all raring to go and then the first half was really slow,” the imposing Czech told Sarah Shephard in a superb interview for Sport“There was a bit of a lack of rhythm and you think: ‘Let’s put a bit of energy in here.’ So when that ball came [a free-kick by West Ham’s Dimitri Payet], I was thinking: ‘Let’s go and get the ball and make something happen.’ A fast counter-attack, or whatever.

“And this was where the mistake came, because there was no way I could have got this ball.”

A moment to forget.

“I wanted to do something extra, but this usually goes wrong. You shouldn’t do things that are extra; you should do things the precise way and not try to do something you don’t have to.”

That’s exactly what the goalkeeper has done since. Some incredible reflexes, commanding in the air when he needs to be, and sensible in his positioning; Čech’s early blip as an Arsenal goalkeeper was just that.

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“You learn in every moment, even at 33. And, in a way, you surprise yourself because this has never happened to me before. I’m always good at keeping myself focused on doing what I need to do.”

Now he has recovered, and has the best shot to save rate in the Premier League so far this season.

Most recently, Čech made a superb save to deny Anthony Martial at the end of the first half of Arsenal’s 3-0 win against Manchester United. It was a moment that could have changed the game.

Those are the sort of moments we want to remember.