Mossburn will host the Gerald Dermody division one final this weekend against Albion Excelsior.
In Saturday's semifinals the fourth qualifier, Albion Excelsior, beat the top qualifier Pioneer 30-27.
"The match was every bit the battle we expected it to be,'' Albion coach Richie Robinson said.
"Both teams played some really good footy and it was anybody's game right up until the final minute.
"It was really pleasing that our Albion boys were switched on from the first whistle and played some really well-structured footy.''
Albion No8 Josh Cameron and centre Zac Brown were the best performers on the day, and scored two tries each.
Mossburn had a more comfortable 43-19 win at home over Blues B.
Mossburn scored four tries in the first 30 minutes to lead 22-0.
The margin was 29-7 at halftime.
Mossburn coach Todd Cavanagh said his Stags got off to a great start, but then unfortunately rested on that, and Blues came back hard in the second 40 minutes.
Player of the day was first five-eighth Josh Cavanagh, who was strong on defence and earned some crucial turnovers.
Tighthead prop Luke Peoples was another key contributor, while replacement players Garry Coutts and John Blair made a big impact off the bench.
Tokanui will host the division two final this weekend against Mataura.
In Saturday's semifinals top qualifier Tokanui earned a hard-fought 23-16 win over Drummond Limehills Star and Mataura beat Riverton 34-13.
Tokanui has not been beaten this season and will start slight favourites in the final.
- JOHN LANGFORD
