Flying Tauranga Sports winger Phillip Togotogorua scored a try after five minutes of the second half, with the conversion, pushing the side out to a 26-nil advantage.
A concerted Rotoiti forward attack was rewarded when Arapo Whata was awarded a five-pointer.
A fifth home side try saw Tauranga Sports take out the encounter 36-5.
Whakarewarewa came back from 11-15 down at half time to record a solid 44-22 win against Rangataua.
Mount Maunganui won a high-scoring encounter against Whakatane Marist 57-25 in the Eastern Bay of Plenty. Te Puna snuck home against Greerton Marist 26-22 and Paroa defeated Waikite 24-13.
- Points Table: Whakarewarewa 10, Tauranga Sports 10, Te Puke Sports 9, Te Puna 9, Mount Maunganui 5, Rotoiti 5, Whakatane Marist 5, Paroa 4, Rangataua 1, Greerton Marist 1, Waikite 0, Opotiki 0.