Seventh-seeded Greene received goals from Tiffany Borst, Kristy Hackett and Laura Durdon to beat second-seeded Sidney 3-1 in a Section Four Class C field hockey quarterfinal Wednesday at Sidney.
Hannah Wood scored off an assist from Katy DeShaw in helping Sidney to a 1-all tie halftime.
Greene (8-6) had a 12-5 advantage in shots and a 6-3 edge in penalty corners.
Sidney goalie Kelsey Decker made eight saves. The Warriors finished the season at 10-6.
The Trojans will play at third-seeded Afton in a semifinal Saturday. The Crimson Knights (11-5) defeated sixth-seeded Windsor, 3-2, Wednesday. No other information was available.