Tasman will host provincial rugby's second-tier Championship final, after the Makos beat Southland 49-28 in Blenheim on Saturday.
Tasman scored three tries to one to lead 30-7 at half-time, but Southland struck back twice after the break.
However the Makos scored three more tries to another one to the Stags to seal the win, and with it a place in the weekend's final in Nelson against Hawke's Bay, who beat Otago on Sunday.
