A first clean sheet of the Emery era was a welcome sight for the Arsenal manager, but he will know there is still plenty of room for improvement in all areas.
And speaking after Arsenal's 2-0 win over Everton, Cech said he believes Emery is already bringing back qualities absent under Wenger that are required for silverware.
Lacazette's sublime strike will stand the test of time, but Aubameyang's was more fortunate as the Gabon forward was clearly offside.
"When a club win titles, it means you have a team with the knowhow to finish it off and you can see it in any sport", Cech said. We have very healthy competition and we are actually taking the benefit of it.
"We were preparing in preseason with the young players and every player to give them a chance to show us their confidence and performance", Emery said.
No I like him, I thought he done well last season and today coming off the bench.
Cech's heroics laid the foundation for Arsenal's burst of two goals in three minutes, but it might have been different if Emery had been quicker with a planned substitution.
The Gunners took the lead against the run of play, with the France worldwide having a poor game and the knowledgeable commentators had suggested that he was going to be replaced by Iwobi, only for Emery to change his mind.
Some English press have rated the Arsenal players after the victory and unsurprisingly handed the Nigerian a good rating despite not playing from the kick off. "I think we only conceded one chance after that".
Gabon worldwide Aubameyang doubled the lead two minutes later from what appeared to be an offside position, sending Pickford the wrong way from close range.
But, having escaped without punishment for their tepid first half, Arsenal seized the lead in the 56th minute.
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