Chelsea may already be pulling away at the top of the Premiership table but Rafael Benitez says the Londoners are not unbeatable.
He said: "We have beaten them before and we can beat them again. They are a better team than they were last year but we're a better team as well.
"To beat them you need every player to be playing at one hundred per cent and you can't afford to make any mistakes because they have good players who can punish you. You need to work hard and concentrate for the full game.
"They are not easy to play against because they work very hard in defence and always have good players going forward, but they can be beaten. We are confident, that's for sure."