Terrigal Avoca and Newcastle City will go head-to-head in a third straight men's Black Diamond Cup grand final after both teams won knockout semis on Saturday.
It will be the sixth time in the space of eight seasons the clubs have met in a decider.
The title showdown will be held at Adelaide Street Oval on October 17.
Minor premiers and defending champions Terrigal Avoca (15.13-103) booked their spot after easily accounted for hosts Killarney Vale (4.5-29).
Newcastle City (8.11-59) progressed after managing to hold off Singleton (8.6-54) in a tight encounter at Pasterfield Sports Complex with both sides landing eight majors each.
In the women's Black Diamond Cup it will be undefeated minor premiers Killarney Vale clashing with three-time reigning champions Newcastle City in the 2020 grand final.
Elimination semis on Saturday saw Killarney Vale (7.8-50) beat Wyong Lakes (1.0-6) and City (14.8-92) trounce Cardiff (1.3-9).
