Armando Dobra’s sweet 14th minute finish proved decisive after Town missed a host of chances. Ben Fox, Mitch Pinnock and Kieron Bowie were all guilty of wasteful finishing in a disappointing performance that completed a miserable season of cup action for the Cobblers. Here are our player ratings from the Technique Stadium...

. CHESTERFIELD, ENGLAND - NOVEMBER 05: Mitch Pinnock of Northampton Town stands dejected at the final whistle during the Emirates FA Cup First Round match between Chesterfield and Northampton Town at Technique Stadium on November 05, 2022 in Chesterfield, England. (Photo by Pete Norton/Getty Images)
Mitch Pinnock so nearly forced a replay with the very last kick of the game. The referee's full-time whistle sounded just seconds after his shot whistled over the crossbar. Pictures: Pete Norton. Photo: Pete Norton

. Lee Burge
He was emphatically beaten by Dobra's exquisite finish and didn't have all that much to do bar a couple of routine bits of goalkeeping... 6 Photo: Pete Norton

. Aaron McGowan
Another handy chunk of game-time under his belt and there were signs of his sharpness returning mixed in with some moments of rust. Delivered one good cross that threatened a leveller... 6 Photo: Pete Norton

. Sam Sherring
At fault for the decisive goal when gifting the ball to Mandeville under minimal pressure. He defended pretty well thereafter but that was ultimately the tie's key moment... 5 Photo: Pete Norton

. Jon Guthrie
Good tussle with the lively Quigley and kept him in check for the most part. For all Chesterfield's nice football, they didn't actually create many chances - the goal was their only shot on target... 7 CHRON STAR MAN Photo: Pete Norton

. Ryan Haynes
Endured a real tough time of it at left-back as Chesterfield cause all manner of problems down their right, with Mandeville particularly influential. Crossing was poor at the other end... 4.5 Photo: Pete Norton

. Jack Sowerby
Sprung Cobblers away on the counter a couple of times but the visitors were seldom able to exert their supposedly superior quality on the contest, particularly in midfield where Chesterfield were more than a match for them... 5.5 Photo: Pete Norton

1. Lee Burge
He was emphatically beaten by Dobra's exquisite finish and didn't have all that much to do bar a couple of routine bits of goalkeeping... 6 Photo: Pete Norton

2. Aaron McGowan
Another handy chunk of game-time under his belt and there were signs of his sharpness returning mixed in with some moments of rust. Delivered one good cross that threatened a leveller... 6 Photo: Pete Norton

3. Sam Sherring
At fault for the decisive goal when gifting the ball to Mandeville under minimal pressure. He defended pretty well thereafter but that was ultimately the tie's key moment... 5 Photo: Pete Norton

4. Jon Guthrie
Good tussle with the lively Quigley and kept him in check for the most part. For all Chesterfield's nice football, they didn't actually create many chances - the goal was their only shot on target... 7 CHRON STAR MAN Photo: Pete Norton