Mid Northern dominated Waipu to score a half-century, winning 50-5 and handing Waipu their third consecutive defeat after a strong start to 2017.
Western Sharks meanwhile had a strong win over Hikurangi to state their title claims, defeating their opponents 37-12.
Both Western Sharks and Mid Northern have just one defeat and are nipping at the heels of OBM. And with both sides matching up with each other and OBM in the next few weeks, the battle for top spot is bound to get interesting.
Meanwhile Otamatea picked up their first win of the season.
Travelling to meet Wellsford, Otamatea defended stoutly to take out the match 20-12.
In the other match Hora Hora continued their winning streak with a 31-20 win over Kamo.
Kamo were coming off their first win of the season, but Hora Hora played with precision to grab their third consecutive victory.
Results: Premier:
Hora Hora 31 v Kamo 20
Mid Northern 50 v Waipu 5
Wellsford 12 v Otamatea 20
OBM 64 v Mid Western 21
Hikurangi 12 v Western Sharks 37
Reserves:
Kamo 43 v Hora Hora 3
Mid Northern 26 v Waipu 36
Wellsford 22 v Otamatea 16
OBM 43 v Mid Western 0
Hikurangi 12 v Western Sharks 40
North Zone Championship:
Kaikohe 27 v Eastern 15
Kaeo 90 v Panguru 3
Kaitaia 45 v Kerikeri B 7
Awanui 36 v Okaihau/Ohaeawai 24
Kerikeri A 85 v Te Rarawa 26
South Zone:
Kaihu 20 Moerewa/UK 15
Tomerata 22 Southern 10
Otiria win by default
Whangaruru win by default