Petr Cech held his hands up for his role in Chelsea's latest slip-up in the Premier League.
The Blues goalkeeper was at fault in the defeat to Liverpool on Sunday after failing to cut out Steven Gerrard's cross.
The Reds skipper's delivery slid past the Czech Republic shot-stopper and allowed Raul Meireles to hammer home the winner into an unguarded net in the 69th minute.
Cech explained he was distracted by the run of Liverpool's Dirk Kuyt in the lead-up to Meireles' strike but took full responsibility for the goal.
"I thought Kuyt would get to the cross at the near post," the 28-year-old told iDNES after Chelsea's seventh loss of the season.
"I wanted to get out so that I could react but he missed the ball, which flew past very fast and at the other post I had no chance then. It was clearly my mistake. I was there later than I should have been.
"I made a clear error, there is nothing more you can say about it."
Cech was also involved in an unsavoury quarrel with team-mate Branislav Ivanovic in the first-half of Sunday's reverse.
But the former Rennes custodian insists the pair have resolved their differences adding: "I shouted at him to leave the ball to me, so then I had to properly tell him to be more careful next time. Ahead of the goal he did that well but I made a mistake.
"If something like that happens on the pitch, you must clear up things by talk so that next time it is okay."
The weekend result saw Chelsea fail to close the gap on league leaders Manchester United, who suffered their first defeat of the campaign at Wolverhampton Wanderers.
Cech thinks that the domestic title is still up for grabs but admits that Chelsea - 10 points worse off than United - missed a great opportunity to close the gap on the Red Devils.
"That makes me most sorry as we could have returned into the title race," he said.
"The good thing is that the gap has not been extended, if nothing else. Twice the pity that United lost and we have not made the best out of it.
"We still have a chance because other clubs have also been dropping points.
"Now Manchester United have slipped up for the first time, we will see how they cope. We have a game in hand against Manchester United and then a replay of this encounter. If we win both, we will be within reach. I think the title race is still wide open."