Chelsea boss Frank Lampard defended their collapse after drawing 2-2 with Sheffield United.
Chelsea were 2-0 up by half-time after striker Tammy Abraham struck twice, but Kurt Zouma's late own goal ensured a draw following Callum Robinson's strike in the first minute of the second half.
"It is not the defence, it is conceding as a team so the lack of concentration or mistakes for the goals are moments when you defend as a team, as much as you attack as a team," pointed out Lampard.
"We concede because we switch off in a game that should be comfortably seen out at 2-0 up. That is not to disrespect Sheffield United, 2-0 is not the end of the story. I was clear with the players at half-time that this can either be 3-0, and okay then this could be nice, or a potential 2-2 on our hands and the disappointing fact is the first goal as much as anything because that allowed it to happen. We only have ourselves to look at as a group, not individuals.
"And I could not care less that we have the youngest team in Chelsea Premier League history. It was a real plus last week, and the fact it was young today I don't think relates at all."
