With the win Baker will now take on No. 2 seeded Benedictine on Tuesday, Nov. 12 in Atchison, Kan., in the HAAC semis.
The Wildcats and Ravens ended in a 2-2 tie back on Oct. 12 inside Liston Stadium.
Baker scored the first two goals of the match on Friday night, as Andy Griffin was the recipient of a beautiful pass from Chris Tuso and Griffin found the back of the net to put BU up 1-0.
Richard Klein then scored in the 32nd minute off of an assist from Jordan Thacker. Avila made it interesting in the 40th minute just before halftime with a goal from Felipe Garcia.
Baker took just three shots in that first frame, while Avila attempted three as well. Out of halftime, Preston Phillips gave Baker a nice cushion with a goal in the 55th minute on another Tuso assist.
With the game seemingly out of reach, Avila clawed back and scored in the 77th minute on a goal from Louis Gallagher to bring the Baker lead to within just one, 3-2.
But Baker's defense tightened up and went home with the victory. Matt Bickley finished the night with four saves.