Skegness United’s Development Side lost 3-2 at Mablethorpe in the Timothy Sales Trophy.
However, the hosts - two divisions higher in the pyramid - needed extra time to progress.
United’s goals came from Tom Pickett and Jamie Wolstenholme.
During the game they hit the woodwork on a number of occasion, and on another day could have come away with a victory.
On Saturday the United Development Side face Sutton Rovers Vets at Marsh Lane, Burgh (KO 1.45pm).