Watford should have been level shortly before the half-hour when Cech pushed away a Richarlison free kick and Roberto Pereyra, following up, thrashed an effort wildly over when he had time to take a touch and then shoot.
But Petr Cech got his fingertips to Troy Deeney's spot kick, nudging the ball onto the post and back out, to roars of approval from the home crowd. "It's quite fortunate it was against Deeney on top of that". His situation shows what football is like.
Wenger also feels Cech has to be considered one of the best Premier League goalkeepers ever. In one week he's gone from hell to heaven. But I like both situations, because in the first he showed a lot of humility and responsibility, and a record like that witnesses a lot of motivation and a huge degree of intelligence.
And the victory was sealed for Arsenal in the 77th minute, when Henrikh Mkhitaryan fired in a third from the edge of the box for his first Premier League goal for the Gunners. I leave that judgement to you.
"These things come always a little bit in but for how much I don't know. But I am happy with him when he scores and when he doesn't score".
Despite Watford's defeat and his own personal disappointment, Deeney was signing autographs and posing for pictures with Arsenal fans outside of the Emirates when he was asked an awkward question.
"Maybe players need to be stronger nowadays than before".