The Iron's Under-18s were defeated 3-0 at Mansfield Town but it wasn't really a result reflective of their performance, in the second of their set of fixtures in the Merit League.
Harry Lewis and Harrison Poulter came close in the first half, but the turning point of the game came on 52 minutes when Tyrell Sellars-Fleming scored a goal which was disallowed for offside, but after seeing a replay since the Iron coaching team are convinced it should have stood.
The hosts quickly took a free-kick, broke and scored moments later.
From then, United were trying to chase the game and took a few risks, bringing players forward.
"They were two evenly matched teams but things didn't quite go our way today," Professional Development Phase Coach Rob Watson said.
"Overall, I was pleased with the performance but disappointed with the result. Sometimes you can concede goals when trying to get things back on an even par."
United return to action with a home match against Hartlepool United at Appleby-Frodingham on Thursday (11am kick-off).
IRON: Murtagh, Cunningham, Abraham, Pike, Burden-Whittleton, Lewis (Dickinson, 70), Elliott-Bell, Robertson (Rowe, 85), Strouther (Harman, 70), Sellars-Fleming, Poulter.