A dramatic derby finale left Tir na nOg turning the tables on a three-point deficit in the closing two minutes to claim a spirited success.
Annaghmore, who played host to the Portadown seniors fresh from a thrilling last-gasp victory the previous week, produced a fine fightback to gain control following first-half frustration.
Paul Carvill converted the final kick of the game to secure Tir na nOg top spot in the battle for derby plaudits and league points.
Marc Davidson and Paul Carvill put up Tir na nOg points before the Annaghmore response from Michael McQuade, Oisin MacIomhair and Connor Cullen.
Paul Carvill capped off Stephen McCann’s fine play and added to his personal tally alongside efforts by Marc Davidson and Paudy Judge.
Chris McDonald steered a rebound over the crossbar off Jamie McAleenan’s fierce drive before Annaghmore’s final first-half point thanks to Owen McCormack as Tir na nOg held a lead of 0-7 to 0-4.
Annaghmore battled to cut the gap after the interval thanks to Connor Cullen’s free plus long-range attempts by Matthew Willis and Shane McGeown.
Owen McCormack’s free and a Connor Cullen double handed Annaghmore the upper hand before Paul Carvill put up Tir na nOg’s first point of the half following around 30 blank minutes.
John McCormack’s free placed Annaghmore clear by three approaching injury-time.
Barry McDonald then popped up to grab a goal for Tir na nOg - despite Shane McGeown’s initial block in the danger area - and set up a frantic finish.
A free close to the sideline from around 25 yards handed Paul Carvill the chance for glory and he proved decisive.
Clubs are reminded that any team notes, coverage feedback or photographs can be sent to Portadown Times sports editor Patrick Van Dort via e-mail to firstname.lastname@example.org.