Rarey Sommer scored 23 points as the Monarchs held out to win.
Mark Morris led 27-17 at halftime, but Washougal cut the lead to 44-41 after three.
Dalton Payne’s two free throws tied the game 51-51 with less than two minutes to play. But back-to-back baskets by Jack Shipley helped the Monarchs reclaim the lead.
Carter Murray led Washougal with 18 points.
MARK MORRIS 58, WASHOUGAL 53
MARK MORRIS — Dawson Fritz 3, Brayden Harris 5, Cole Busch 2, Reece Gibb 11, Jack Shipley 8, Thomas Sprague 6, Rarey Sommer 23. Totals 22 (1) 13-23 58.
WASHOUGAL — Kol Mael 9, Alex Orr 5, Carter Murray 18, Brevan Bea 10, Dalton Payne 4, Gabe Kent 3, Julien Jones 2, Blake Deming 2, John Miner 0. Totals 17 (4) 15-30 53.