Thomas Sorensen has admitted that Stoke were 'not good enough' in their 2-0 home defeat to Manchester United.
The Potters have been excellent at the Britannia Stadium since they won promotion to the Premier League and were determined to claim another good result against the champions on Saturday.
They kept United at bay in the first half but Dimitar Berbatov broke the deadlock in the 62nd minute and John O'Shea added a second with 13 minutes remaining.
Sorensen does not believe Stoke performed to their usual high standards and consequently made life too easy for their opponents.
"I don't think we ever got in the game or had the normal drive and commitment of being close and in their faces," the goalkeeper told The Sentinel.
"We didn't compete enough. We never caused them any problems. I don't think we had half a chance in the whole game and that's not good enough.
"When you give them space and are sitting back, they are going to pick their passes. Eventually they got through and got an easy goal.
"It is disappointing because I know we can do a lot better."
Sorensen could not fault the effort of Stoke's defensive unit but insists the overall display was not as positive as when Chelsea snatched a last-gasp 2-1 win at the Britannia Stadium earlier in September.
He said: "It was not like the Chelsea game where we were close and we were at it. We never got going.
"It was hard shouting at the back and it just didn't really happen for us. We didn't ever get in the game and get some fluent play.
"We had a couple of corners and throw-ins from the halfway line, but I think that was it.
"Defensively we did a job, but going forward we didn't cause them any problems."