Jon McCarthy says Chester FC fans saw their side at their worst during the FA Cup fourth qualifying round defeat at Southport on Saturday.
The Blues boss was left disappointed by his side's performance in front of over 700 travelling fans in the 1-0 defeat to former manager Steve Burr's Sandgrounders at Haig Avenue.
A first-half Declan Weeks effort was all that separated the sides but it was enough to see Southport through to the first round proper and put an end to Chester's seven-match unbeaten run that saw them go 700 minutes without conceding until Saturday.
"It is an important competition for us as a football club and can be really important financially," said McCarthy.
"We got ourselves into a position where we got our fans excited about their football club once again and they have turned up in numbers, real big numbers.
"I wanted to keep that going, I wanted them to see their team at their best and and they saw them at the worst they have been in eight games.
"It was a massively disappointed dressing room. To generate that level of support and for them to see that we are all disappointed."
While unhappy with the manner of his side's exit from the competition, McCarthy was keen to look at the bigger picture and not forget what had made the previous seven games so successful for the Blues.
He said: "I do have to couple that with the fact that this side has conceded one goal in eight games. One deflected goal. Although we weren't happy with the performance we have to put it in to some kind of context.
"We have worked very hard on attitude and no complacency. We just didn't see that it the game. They have to recognise they can't produce that again.
"There were a lot of players off that little bit of detail that makes it all come together. It has hit us now and we need to work out why and make sure it doesn't happen again."
Chester are back in action this weekend when they travel to York City (3pm) in the National League.