Michael Essien has defended Petr Cech and insisted all the players were to blame for Chelsea's 2-1 defeat to Manchester City.
Cech was beaten by a Carlos Tevez free-kick even though the ball was aimed close to him.
The goalkeeper has made a few errors this season and has struggled at handling crosses, but Essien feels that he should not be singled out.
He said: "Petr doesn't play on his own. We have 11 players on the pitch so everyone should take the blame, not just Petr. If we did our defensive work we wouldn't concede.
"We have to blame ourselves and do our homework well."
Coach Carlo Ancelotti has also given the 27-year-old his full backing on the eve of Chelsea's final Champions League group game at home against Apoel Nicosia tomorrow.
Chelsea have already qualified for the knock-out phase and Ancelotti added: "This season he did very well. I like him and he's a keeper who takes responsibility.
"He likes to come out to catch the ball in the box. He could have done better with the free kick, but a keeper can miss sometimes."
Ancelotti has confirmed Gael Kakuta is set to make his first start for Chelsea tomorrow night, while Michael Ballack (knee), Ashley Cole (ankle) and John Terry (knee) are doubtful.
