Playoff spots are on the line as teams jostle for final spots in the top eight or to lock in a top four spot to confirm an all-important home quarterfinal.
Find key match information and team lists below (teams are added as they are named):
Northland v Otago
Friday 4 October
7.05pm, Semenoff Stadium
Manawatū v Counties Manukau
Saturday 5 October
2.05pm, Massey University
Southland v North Harbour
Saturday 5 October
4.35pm, Invercargill Rugby Park
Wellington v Hawke’s Bay
Saturday 5 October
4.35pm, Sky Stadium
Canterbury v Waikato
Saturday 5 October
7.05pm, Apollo Projects Stadium
Tasman v Taranaki (Ranfurly Shield)
Sunday 6 October
2.05pm, Trafalgar Park
Auckland v Bay of Plenty
Sunday 6 October
4.35pm, Auckland Grammar School