Jessica Chatman had a double-double with 30 points and 13 rebounds to help Union in its push for a postseason berth.
The Titans can lock up the No. 2 seed to the bi-district playoffs with wins next week over Battle Ground and Heritage.
Angelique Williams added 14 points for the Titans, who dominated on the boards.
Deja Nicholas had 21 for Evergreen.
UNION 54, EVERGREEN 38
EVERGREEN — Deja Nicholas 21, Sydney Holland 4, Jennifer Patterson 5, Marissa Shannon 0, Chaysee Telles 0, Ciara Shannon 4, Cashsha Bynum 1, Jocelyn Gerdue 3, Charity Coppedge 0, Bailly Simms 0. Totals 16 (1) 5-10 38.
UNION — Jessica Chatman 30, Angelique Williams 14, Tuileisu Anderson 6, Nicole Woodside 0, Molly Petrie 0, Hannah O’Donnell 3, Mykaila Forsyth 0, Amica Cranston 0, Cassie Anderson 1. Totals 14 (5) 21-30 54.
