In B-grade, Merrigum put in a quality performance to edge Nagambie out of contention, prevailing 46-45 at Stanhope Recreation Reserve.
The Bulldogs face unexpected opposition in Shepparton East, which lost its first game of the season in the grand final qualifier against Tallygaroopna.
The Eagles also went down in the C-grade qualifier, with Girgarre advancing to the decider 36-31.
The Kangaroos will await the winner of Shepparton East and Murchison-Toolamba on the final day.
Merrigum continued its unlikely run from sixth position in C-reserve, defeating Shepparton East 53-46.
The Bulldogs are now set to battle Tallygaroopna, looking to advance to a grand final showdown with Nagambie.
Merrigum also emerged from the 3-6 bracket in 17-and-under, defeating Stanhope 42-39 at the weekend.
The side will take on Rushworth in the preliminary final after the Tigers were unable to match Shepparton East in the qualifier, suffering a 38-31 defeat.
Rushworth will also need to get through the prelim in 15-and-under after going down 45-38 to Tallygaroopna.
Shepparton East will be the next assignment after the Eagles ended Girgarre’s campaign 40-38 in the elimination semi-final.
The Tigers and Roos faced off in 13-and-under, Girgarre prevailing 26-15 to end Rushworth’s season.
Next up for the blue-and-whites is Nagambie in the preliminary final, with the winner earn a place against Shepparton East on the final day.
All preliminary finals will be played at Central Park Recreation Reserve in Shepparton East on Saturday.
