Dean Saunders saw his Spireites side concede later for the third home game in succession as they lost 2-1 to Burton Albion at the Proact Stadium.
Sam Hird had given the hosts an ideal start when he scored with a header in the second minute, but strikes from Scott Beavon and a last-gasp finish from Jerome Binnom-Williams gave the league-leading Brewers all of the points.
After the match Saunders gave his reaction to PlayerHD: "It's a bit of shock we're feeling, that's three times that's happened to us, three home games running. we're all just devastated - all the lads in the dressing room.
"We had a chance to win it in the 92nd minute, Armand Gnanduillet with a header at the back post and their 'keeper makes a great save with his legs. Just when you thought we might win it they counter attack us and score a goal which we should never concede.
"It was down to a lack of communication. They're top of the league and we were trying to keep the back four intact in the last minute of the game and we've ended up losing all the points."
In the build-up to Albion's late winner Spireites midfielder Jay O'Shea was felled in the Burton box, but with a penalty not awarded the visitors broke with speed to win the match.
Saunders had this to say: "It looked like a penalty at the time but apparently it's touch-and-go and maybe not a penalty. Either way we should have stopped them on the edge of their own box, we should have had players on their toes pushing in and making sure they couldn't counter attack on us."
However, the Spireites boss was pleased to have another game so quickly to allow the Spireites to put the disappointment behind them without much need to dwell on it.
He said: "All the supporters have been slapped in the face again, so have all the players, but there's only one thing to do: dust ourselves down, get back up and go and get a win at Blackpool on Tuesday night."