Chelsea coach Carlo Ancelotti accepted that his side had been well below their best in an unconvincing 1-0 Champions League win over Apoel Nicosia in Cyprus.
A Nicolas Anelka goal was enough to secure three valuable points for the Blues, but Ancelotti admitted that his side will need to improve against Liverpool on Sunday.
He commented: "It was a good result, but perhaps not a good performance.
"We started with good control, scored a goal and we had opportunities to do quick counter-attacks after that, but we didn't do this.
"In the second half it was different. We tried to control the game with possession, but we made a lot of mistakes.
"Nicosia played very well in the second half and deserved to draw this game. This is football.
"I'm not satisfied. I wanted Chelsea to play better and to take more control, to play with courage.
"But I think that, in this moment of the season, it's normal. We have to change, for sure. We have to play better.
"I'm not angry with the players. I have a lot of faith in this team and these players. I was a player for a lot of years myself and I know when things don't go well.
"I'm not afraid, not angry with the players. The only thing is that I'd like Chelsea to play better than we did today."