Arsene Wenger accepted “full responsibility” for Arsenal’s humiliating 6-0 defeat to title rivals Chelsea in his 1000th match in charge of the club on Saturday.
"This defeat is my fault, I take full responsibility for it,” Wenger told the BBC before declining to speak to the rest of the media at the traditional post-match press conference.
“I don't think there's too much need to talk about the mistakes we made. We got a good hiding today.
“It's how we respond now on Tuesday night [against Swansea] and the best way is not to explain too much the mistakes.
"Yes, of course it's one of the worst days [in my career]. It's over after 20 minutes and it's a long game after that. You don't prepare all week to experience that kind of experience."
The game included a hugely controversial incident at 2-0 when referee Andre Marriner awarded Chelsea a penalty for a handball committed by Alex Oxlade-Chamberlain, but the official mistakenly sent off left-back Kieran Gibbs.
Wenger claimed Marriner did not see the incident but refused to use the red card as an excuse for a result that leaves Arsenal seven points behind the league leaders.
He added: “I believe it was handball but the referee hasn't seen it. The ball went out and I think it's Chamberlain who touched the ball.
“I don't know who gave indication to the referee that it was handball but he has certainly not seen it. Of course it's a huge disappointment today but we want to win the next game now."