Tottenham manager Harry Redknapp criticised his side after two Arsenal goals inside 11 seconds destroyed hopes of a Spurs win at the Emirates.
"We committed suicide. All three goals were scandalous, there wasn't a good goal amongst them," Redknapp told BBC Sport after the 3-0 defeat.
"Giving Cesc Fabregas the ball from the kick-off was Sunday morning football."
Redknapp's opposite number, Arsene Wenger, said: "It could have been four or five. We should have scored more."
Goals from Robin van Persie and Fabregas, three minutes before the break, ruined an otherwise-convincing first-half performance from visitors Spurs.
"On 42 minutes I felt the crowd were getting on to them, they weren't creating anything worth talking about, and I felt very comfortable," said Redknapp.
I couldn't communicate with the players because of the noise of the stadium - I am not used to that!
Arsene Wenger
"I'm looking up at the clock with three minutes to half-time and thinking we've done our job. I could see us certainly getting a big result. But it all turned upside-down."
Several Spurs players, most notably Robbie Keane, had talked up their chances of beating Arsenal before the game.
However, Redknapp insisted his players would recover from the subsequent emphatic knock to their confidence.
"We've not hit a blip - we got beaten by Arsenal today but we've got 19 points and we'll still be right up there at the end of the season," he concluded.
Wenger, presiding over Arsenal's 20th consecutive league contest against Spurs without defeat, said his side were clinical in taking the lead.
We should have scored more - Wenger
"We took advantage of two opportunities and that changed the game completely," he said.
"The back five did very well, we didn't give any chances away and during a difficult period of the game they kept us in it.
"But any mistakes and your opponent can take advantage of them, and we did that. It was a shock for them to concede the first goal and we took advantage of the goal.
"Our club deserves a lot of credit - a derby is a very different game no matter how good you are, but it shows we can prepare and turn up for the game every time."
Wenger added that television pictures of the Arsenal boss hurling his jacket back into the dugout were inspired not by anger at his team, but the noise inside the Emirates Stadium.
"I threw my jacket down because I was frustrated," Wenger admitted, adding: "I couldn't communicate with the players because of the noise of the stadium - I am not used to that!"
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