There were few positive points for the Spireites on Saturday.
One of the few players to have come out with any credit was ex-Hull City defender Liam Cooper and he knew the overall performance wasn’t good enough.
The 21-year-old centre-half admitted: “We weren’t at it for the first half an hour and then, I think, the first 15 minutes of the second half.
“We’ve picked up on that and it won’t be happening again this season.
“It was reminiscent of Plymouth away earlier this season (when Chesterfield won 1-0 despite being battered).
“We blocked shots, defended for our lives and you think it’ll be our day but it wasn’t to be and it was a rubbish result.
“We know from our point of view it’s a sloppy goal to concede. If that didn’t go in, apart from the first half they never really created much.
“I think we’re our own worst nightmare sometimes. I think we have got to start getting into the right habits and progressing to the end of the season now.”
He added: “Obviously we had a couple of chances at the end.
“We’ve had one disallowed at the end and the lads were saying they didn’t know if Armand Gnanduillet was offside.
“All the lads are disappointed; it was another bad day but we have got to pick ourselves up and try and get on that run that we need.
“The lads are down. It’s hard to come away from a local derby and get beat 1-0.
“We’ve conceded a sloppy goal; the lads are down and rightly so.
“We’ll be back in for training, pick ourselves up and prepare for next week.
“We can’t keep doing this every week, looking back and saying ‘what if’.
“We’ve got to go out there and do it; it’s down to us.
“It is a hard time, but we have got to pick ourselves up and look forward to the next one.”