The playoff picture became a lot clearer following two high-scoring thrillers in the Scott Electrical Premiership.
With Northern Wairoa succumbing to Otangarei 54-36 and Moerewa outlasting Portland 56-34, the four teams in the finals were secured.
However, the last round will determine home advantage for the top seeds.
Takahiwai, Moerewa, Otangarei and Portland have locked their spots in the playoffs.
Portland will stay fourth and Otangarei will remain third regardless of how the final regular season plays out.