Yesterday was definitely not his day... was the main weak link during the first half but even so our game was fluid and on the right track, everything went downhill for us once he got outshined by Szczesny in the second half, nobody could have matched that but certainly no point denying that Morata also had one of those moody days where he doesn't add anything good and just stands in the way of others.
Anyway, in his case i'm sure he will eventually bounce back with a couple of goals in the next few games tho, afterall it was just the first game of the season and consistency has never been one of his main strengths, just needs to keep a clear head and focus only on his game.