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Teams from outside Dublin and Belfast competed, but played their home matches in either Dublin (if based in the Republic of Ireland) or Belfast (if based in Northern Ireland).
Although the tie finished level on goals scored, the tie was awarded to Dundalk after Distillery left the pitch before extra time commenced in protest at the officials' decisions.
Cliftonville progressed by virtue of winning more corner kicks.
Semi-finals
Teams that were at home in the first leg listed on the left.