Darlington found an unlikely match-winner in central defender Matt Clarke who was pushed up front for the second half and scored twice to seal a 2-1 win against Kidderminster.
The home side failed to put their passing game together throughout the first 45 minutes and Kidderminster striker Bo Henriksen broke the deadlock.
Darlington failed to clear following a corner and the ball found its way to Henriksen 12 yards out. He had his back to goal but he turned quickly and sent a shot into the roof of the net past Andy Collett.
Clarke headed an equaliser from Richard Hodgson's corner and he then set up substitute Ian Clark but he fired his shot straight at goalkeeper Stuart Brock.
Clarke volleyed the winner in the closing stages from another Hodgson cross.