Neil Warnock's side proved difficult for Manchester United to break down and he was pleased with much of his sides performance in the narrow defeat.
"I think that's the best opportunity I've had to beat United to be honest with the run they were on, I said if we could get in front the crowd would be very restless and we had the best chance of the game with Fraizer Campbell.
"The biggest disappointment was that we didn't create more from what we had. We had so many opportunities to pass the ball in good areas, without any pressure on us from the Manchester United players."
Neil thought the referee, Chris Foy, and his assistants put in a good performance but he did pull out one incident that could have given his side an advantage at a crucial time.
"We could have had a penalty before half-time, with Luke Shaw pulling Campbell from a cross but I thought the referee was good and I cannot complain for once."
The winning goal from substitute Juan Mata, a deflected effort, was the difference between both sides but the Palace boss was sure that his goalkeeper would be disappointed with his attempt to keep the chance out.
"Looking at the goal again I am sure Julian Speroni will be disappointed, but he's saved us so many times over the years hasn't he."