Darlington put in an outstanding second-half display to run out easy winners over Mansfield.
On-loan striker Kyle Lafferty gave his side the perfect start with a goal after only six minutes.
They added a second after 53 minutes when a mistake from Town captain Alex Baptiste allowed Shelton Martis fire in from a narrow angle.
Five minutes later Mat Clarke claimed a third while Akpo Sodje's header on 64 minutes completed the scoring.
Darlington: Schmeichel, Valentine, Martis, Clarke, Kendrick, Johnson, Keltie (Stamp 67), Dickman (Peacock 67), Logan, Sodje, Lafferty (Hopkins 58).
Subs Not Used: Appleby, Norton.
Goals: Lafferty 6, Sodje 53, Clarke 58, Sodje 64.
Mansfield: White, Jacobs, Baptiste, Hjelde, Jelleyman, Birchall, Dawson (Uhlenbeek 67), Coke, Rundle (Lloyd 57), Brown (Arnold 77), Reet.
Subs Not Used: Pressman, Russell.
Ref: S Mattieson (Stockport).