Ireland's Under-17 suffered heartbreak in their European Championship quarter-final tie against the Netherlands on Monday. Corcoran saved Redan's spot kick and looked to have kept the Irish hopes alive.
But the fairytale story quickly became a nightmare referee Zbynek Proske ruled the save invalid and issued Corcoran a yellow card for coming off his line to illegally block the shot.
Centre back Oisin McEntee stepped in between the posts and the retaken penalty was coolly converted. There was essentially no difference to how both lined up; the only difference was that the referee penalized Corcoran ... knowing full well that he had already shown him a yellow card.
The club has produced 10 full Ireland internationals to date, with Corcoran looking to emulate the likes of Glenn Whelan and Andy Reid with a step up to the full national side on day.
When play resumed, captain Redan made no mistake from the retake and fired the Netherlands into the semifinals.
Republic of Ireland senior manager Martin O'Neill, who was watching the game from the stands at the Proact Stadium in Chesterfield, made his way onto the pitch after the game and spoke to the referee.
"It was a frustrating end to the match, especially as the referee had warned the Dutch goalkeeper twice during the shoot-out", said Ireland manager Colin O'Brien.
However, replays showed that Corcoran's forward movement was minimal and the teenager was left inconsolable by the decision.
The game went to penalties after finishing up 1-1 after normal time. "It still is the moment of his career so far but just for the wrong reasons unfortunately".