Jessica Chatman had 16 points and 15 rebounds as the Titans let the game get away from them in the second half of a Class 4A bi-district tournament game.
Federal Way took 27-23 lead into halftime, but enjoyed a 30-12 advantage in the second half.
Tuileisu Anderson added eight points and six rebounds for the Titans (14-8), who will face Auburn-Riverside or Central Kitsap at 8 p.m. Friday at Puyallup High School in a loser-out game.
FEDERAL WAY 57, UNION 35
UNION (14-8) — Aman Kaur 0, Jessica Chatman 16, Angelique Williams 9, Tuileisu Anderson 8, Nicole Woodside 2, Molly Petrie 0, Hannah O’Donnell 0, Mykaila Forsyth 0, Amica Cranston 0, Cassie Anderson 0, Delaney Lindl 9. Totals 11 (1) 12-18 35.