The Spireites youth team went out of the FA Youth Cup on Tuesday night, losing 3-0 at home to Sheffield United.The visitors went close in only the second minute when Brodie Litchfield's low shot hit the outside of Dylan Parkin's left-hand post.
Graham Kelly and Tom Charlesworth also threatened before Chesterfield's first real opening. That came when Ricky German received a pass through the middle from George Milner, but his control let him down and keeper Aaron Ramsdale gathered the ball.
Moments later, German tested Ramsdale with a fine 20-yard effort which the keeper did well to save, diving to his left.
The opening goal came in the 38th minute when a corner from the right went in off Luke Randle at the near post for an own goal.
After Calum Greaves had a shot charged down, the Blades extended their lead in the opening minute of the second half when Stephen Mallon received a ball played in from the right and finished from close range.
Parkin twice made saves from Jordan Hallam and also kept out a Kelly effort while Joseph Cummings had a shot deflected wide.
As the Spireites looked for a way back, half-time substitute Curtis Morrison was crowded out as he attempted to break through and Jake Hudson's angled shot was saved by Ramsdale with his legs.
With just seven minutes remaining, Hallam completed the scoring, producing a good finish from an acute angle after being forced wide by Parkin.
Academy manager Mark Smith described his team's performance as "very, very, very disappointing". He added: "I honestly thought we'd have a bit of a chance, but sometimes we can perform like that. There seemed to be a lack of determination to make a game of it.
"Dylan kept us in it with three or four saves in the second half, but we didn't create many chances. If we'd have nicked a goal, we could have made it interesting, but we never really looked like scoring."