Buninyong has slipped out of the top four in the final round of the Central Highlands Netball League season on Saturday.
The Bombers had home court advantage going into the must-win A-grade game, but fell short to 13th-placed Gordon to drop to sixth.
The team will now face off in an elimination final against seventh-placed Ballan next week, which is coming off a tough 35-point loss to Bungaree.
Despite a bye to end the regular season, Dunnstown has finished on top of the ladder and remains undefeated.
Beaufort claimed the double chance with a 31-point victory pushing Newlyn out of the eight and ending its hopes of a finals campaign.
Beaufort coach Jordyn Bibby said the fourth finish had been unexpected and the club was “pretty stoked” with the outcome.
“We knew Newlyn was going to throw everything at us because they were still hoping for a chance in finals,” Bibby said.
“But all the girls contributed really well, stood up to the pressure and played a really great game.”
Bibby said after a tough match against Learmonth the week prior, the players had focused on consolidating their own game including discipline and minimising turnovers ahead of finals.
Goal keeper Rebecca Lofts had a “tremendous” match after returning to the squad last week.
Bibby said Lofts and Jessica Hollett had combined well in defence to give the team opportunities to work the ball forward.
Learmonth retained its second placing after toppling Hepburn by a healthy 38 points and will come up against third-placed Springbank in the qualifying final, which had a 35-point win over Creswick.
Fifth-placed Bungaree and eighth-placed Waubra will also face off in an elimination final next week.