The Crusaders fell short in their bid to reach the Trans-Tasman showpiece match, which will be contested by the Blues and Highlanders.
The Blues and the Crusaders made it four wins from four in their Super Rugby Trans-Tasman campaigns by beating the Reds and Western Force.
The Chiefs did their best to produce a stunning comeback, but the Reds held on to secure a hard-fought victory.
Richie Mo'unga shone as the Crusaders, winners of Super Rugby Aotearoa, thrashed Australian champions the Reds in their Trans Tasman clash.
Tense finishes went in the favour of the Crusaders and the Chiefs in Super Rugby Trans-Tasman, while the Blues were emphatic victors.
The Chiefs were much-changed for their Super Rugby Aotearoa match against the Blues, who still had to work hard for a 39-19 victory.
Will Jordan scored a double and Codie Taylor got another as the Crusaders confirmed top spot and a home final.
The Highlanders bounced back from their defeat to the Chiefs to propel themselves back into the Finals hunt with a win over the Blues.
After suffering back-to-back defeats, the Blues responded with a much-needed win over the Hurricanes in Auckland.
Alex Mafi crossed three times as the Reds thrashed Waratahs on Saturday, while the Chiefs edged out the Blues late on.