Arsenal keeper Petr Cech, speaking to Sky Sports: "It was unacceptable for a club of our size. OK, you can come and lose a match 4-0 if you have a bad day, when you are fighting but are unlucky, but not like how it happened today.
"We were not fighting, not winning any individual battles, and we completely failed to respond to their way of playing. This is the most disappointing thing. The only positive out of the game is that we have time to respond, because it is early in the seaosn.
“I don’t think it can get any worse than this. I believe we have a team who can respond to a difficult moment. With two defeats you can still win the league. If I didn’t believe we could respond I would retire and not play football anymore. We have shown our ability in many games.”