Thistle were the only side in the competition to gain all their points from wins. They had no drawn games.
Senior football in Gisborne will finish this weekend, at Childers Road Reserve.
On Saturday, at 12 midday, Gizzy Bobcat Services Thistle will play Heavy Equipment Services Gisborne United Thirds in the final of the Poverty Bay Cup for Eastern League third division teams.
At 3pm, 1st Class Decorators Wainui Salty Dogs will play Thistle Vintage in the final of the Chris Moore Cup for Eastern League second division teams.
At 10.30am on Sunday, women's teams Gisborne Laundry Services Wainui Riverina will play Bohemians in the final of the Braybrook Cup.
The Bailey Cup for Eastern League first division men's teams has already been decided. Sunshine Brewing Wainui Sharks completed the league and cup double by beating HES Gisborne United in the final, 2-1 after extra time.