Lauren Dennen and Carly Ferentz each netted three goals, Elsa Dean-Muncie posted two goals and three assists, and the second-seeded Rangers (10-2) shut out the No. 15 Blue Blazes (0-8) in a Class B opening-round game in Cumberland.
Lia Traficonte also scored twice and Charlotte Taylor had a goal and two assists.
Greely will host No. 7 Brunswick in the quarterfinals on Saturday.