Chester FC manager Steve Burr has labelled Tuesday night's 2-1 defeat to Dartford an 'awful result'.
His team controlled the match in terms of possession and chances, but there was a lack of intensity about the performance against a team heading towards relegation.
Darts keeper Deren Ibrahim made a string of good saves but Chester were not ruthless enough in front of goal and it took them 54 minutes to find a goal, which came through Oliver McBurnie.
But the lead lasted a matter of seconds as some woeful defending allowed Nathan Green to equalise, and the visitors sat back to protect what would have been a decent point.
As the clock ticked down, chances dried up and frustration grew, and that was compounded on 89 minutes Danny Harris flicked on a corner and the ball deflected past Jon Worsnop off Kingsley James to give Dartford the win.
Burr said: "It's an awful result. If you analyse it then it's a game where we are scratching our heads why we didn't win it but that's how it's panned out.
"We're really disappointed after we took the lead because they were hard to break down and they came and put bodies in front of the goalkeeper and it was really hard to get in behind them and down the sides of them and we expected that and it was just a question of not getting frustrated.
"We got ourselves in front and then for them to equalise within I don't know what was it 30 seconds was disappointing and then the goal right at the end probably summed up maybe that it was just not going to be one of those nights for us."
Dartford's goals both came about as a result of poor defending down the left, the first catching the defence asleep and the second from a corner that could have been avoided, adding to the manager's frustration.
"We'll have a look back as we always do at the DVD of the game but it looked sloppy from where I was, particularly the one where we'd got ourselves in front," said Burr.
"We spoke about that at half-time and we felt that if we got ourselves in front we could go on and win comfortably but that wasn't the case.
"We've dealt with corners like that all season. It's come off the side of Kingsley's head and dropped under Jon but we've been dealing with things like that all season from corners so that was disappoionting."