Otterville led 13-5 after the first quarter, 30-17 at the half and 48-25 after three quarters.
Hannah Stone led Otterville with 26 points. Stephanie Oswald netted 17 and Brittney Castle 11.
Kerrigan Wessing led Pilot Grove, 7-15, with 14 points.
Otterville improved to 15-6 overall and 2-0 in the CCAA.