Lajong players created several scoring chances against their opponents but they could not finish it off on most occasions.
The home side, who dominated the match, failed to convert at least three clear opportunities in a slow first half itself. Ornell Glen and Tuboi missed a couple of opportunities that could have changed the complexion of the game.
United's Eric Browne converted the first goal of the match in the 49th minute when Lajong's main defenders -- Wailadmi and Minchol Son -- were caught napping.
Glen, who was criticized by the home fans for his uncomfortable body languages in the last two matches, showed his class. His shot from just outside the box in the 63rd minute and a header five minutes later had the United SC keeper busy.
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Lajong could have taken home three points had Tuboi not found in an off-side position when he converted a short cross from Glen from outside the box in the 87th minute.
Lajong coach Thangboi Singto significantly replaced Glen with Subash Singh to give added pressure to United.