Glenswilly are Donegal champions, winning their third Dr Maguire Cup in six years as they beat the highly-fancied Kilcar.
In front of a bumper attendance of 7,860 at MacCumhail Park, the performances and contributions of county stars Michael Murphy and Neil Gallagher proved to be the difference as they sneaked through by 1-10 to Kilcar's 0-12.
Glenswilly led at half-time 1-7 to 0-6, and before the second half commenced, they were very late in taking the field, leaving Martin McHugh's men out on the pitch getting a soaking.
The first half goal came from that most rare of things - an old-fashioned long ball in from Neil Gallagher to Michael Murphy at the edge of the Kilcar square, and the outcome was a goal from the man who sponsors the senior championship.
The introduction of former county star Ciaran Bonner had an instant impact for Glenswilly, the languid forward hitting a point.
It was Murphy however, who dragged Glenswilly across the line by nailing his dead ball opportunities.
They now go on to meet Kilcoo in the quarter-final of the Ulster senior club championship.
In the ladies' club championship Donaghmoyne overcame Clann Eireann of Armagh on a scoreline of 3-7 to 0-6. They will fact Tyrone side St Macartan's in the Ulster final, who saw off Moville 2-13 to 2-10.
The Intermediate final will be between Kinawley and Shane O'Neill's, who saw off Glen and Truagh respectively.
Latton and Kingscourt will contest the Junior final after they beat Granemore and Coalisland.