So, about those good vibes from preseason ...
Arsenal's Premier League campaign began with a thud Sunday at the Emirates, as the Gunners were stunned 2-0 by an impressive West Ham side, the latter getting goals from Cheikhou Kouyate and Mauro Zarate on either side of the interval.
Related: West Ham puts dent in Arsenal's title hopes with stunning away win
Both goals came courtesy of errors from summer signing Petr Cech, the shot-stopper who was supposed to help solve Arsenal's long-standing issues between the posts.
Twitter, naturally, had a field day with the goalkeeper's struggles.