Emma Fisher made her season debut with 11 points and eight rebounds to lead the Monarchs.
Brookly Schlect set the defensive tone with six steals. Lily Koski Haase added 10 points, and Katie Troy had eight points and four assists.
Megan Geiger led Battle Ground with eight points.
MARK MORRIS 48, BATTLE GROUND 20
BATTLE GROUND (1-2) — Megan Geiger 8, Faith Prom 2, Marissa Maunu 1, Jenna Bergren 0, Hailey Geiger 3, Abby Beall 0, Sparrow Whitmire 2, Lena Whitten 0, Emma Massie 0, Elizabeth Miller 4. Totals 7 (0) 6-15 20.
MARK MORRIS (1-1) — Katie Troy 8, Mariah Bost 3, Madison Noel 4, Lily Koski-Haase 10, Brooklyn Schlect 2, Emma Fisher 11, Isabella Merzoian 2, Erica Snyder 3, Taylor Wilkinson 0, Jacie Rismoen 5, Madelyn Mejia 0, Mo Harris 0. Totals 16 (1) 15-21 48.