A goal from England schoolboys’ captain Adam Curry five minutes from the end of extra-time knocked New Hartley Juniors out of the Durham FA Youth Cup.
Despite the disappointment in defeat, New Hartley gave a great effort against the runaway league leaders who have lost only once this season.
Hartley had a great chance to take the lead in the first half when striker Dan Troy misjudged his header from 2 yards out then unbelievably Seaham went up the field and missed an exact chance.
Hartley again had chances to go in front in the second with chances from Callum Johnston and Tyler Davis with both efforts failing to trouble the Seaham keeper.
Seaham also had chances but centre backs Callum Morgan and Marcus McCreedy were in top form, as was Tom Craney in goal.
With no score on 90 minutes the game went into extra-time, and during the first half Hartley hit the bar with a Johnston strike.
The tie seemed to be going to penalties but with five minutes remaining the deadlock was broken as Curry scored what was to be the winner and left Hartley deflated.
Seaham will now play Lampton Street in the final after they beat Willington 2-1 in the other semi.
New Hartley are at home in league action this Saturday against South Sheilds with a noon kick-off.