Roy Hodgson admitted Crystal Palace's first-half performance against Tottenham was not good enough - and the only real positive was Mamadou Sakho playing 90 minutes for the first time since February.
The France international, 29, had been out of action for several months after a serious knee injury he suffered last season required surgery.
He came on in the 1-0 win against Aston Villa prior to the international break before starting against Tottenham.
Hodgson said: “We are obviously unhappy with our first-half performance.
“All of us are prepared to accept the responsibility for that.
“We didn't show the intensity I hoped we would, but I don't want to take too much away from Tottenham during that spell because they played very well.
"I am glad it didn't become more than four. That is bad enough, so I didn't want any more.
READ: Player ratings from Tottenham 4 Crystal Palace 0
“The only real positive I can take from the game is Mamadou Sakho, after such a long lay-off and such a long time out through injury, got through 90 minutes in a very tough game.”
Heung-min Son scored either side of a Patrick van Aanholt own goal before Erik Lamela netted Spurs' fourth in a rampant 42 minutes.
The defeat sees Palace now sit 11th in the Premier League table with seven points from their first five games.
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