Chesterfield are through to the Johnstone’s Paint Trophy northern semi-finals after goals from Armand Gnanduillet and two by Ollie Banks saw off Rochdale.
The first goal took some time to come but it was no more than Paul Cook’s team deserved after they’d dominated the opening 45 minutes.
Banks got on the end of Gary Robert’s cross in the second minute of injury time to give the Spireites the lead.
Fresh from reaching the FA Cup second round Chesterfield were aiming to extend their good record in the Johnstone’s Paint Trophy.
And they began well with Banks shooting just wide from distance in the early stages.
Gnanduillet was next to go close as he shot wide from Roberts’ free kick.
Rochdale began the second half well and had a goal chalked off for offside before Ian Henderson grazed a post just before the hour.
But it was the Spireites who scored next with Gnanduillet scoring from Roberts cross after 72 minutes.
Banks made the match safe 12 minutes from time as he fired home from another Roberts pass.
Henderson almost snatched a consolation for Dale but Tommy Lee was equal to his effort.
Chesterfield (4-1-3-1-1): Lee; Talbot, Evatt, Cooper, Humphreys; Hird; O’Shea, Ryan, Roberts; Banks; Gnanduillet. Subs (not used): Chapman, Togwell, Darikwa, Doyle, Richards.
Rochdale (3-5-2): Lillis; Eastham, Lancashire, O’Connell; Dicker, Henderson, Tutte, Done, Vidal; Hogan, Vincenti. Subs (not used): Thompson, Allen, Rose, Cummins, Bunney.
Ref: Chris Sarginson (Staffs)