Sebald had 10 points, while Gannon's leading scorers Jen Papich and Brittany Batts
were held to a combined two points.
Papich added a basket in the second half while 3-point specialist Batts went scoreless, but the Knights got contributions from three freshmen: eight points from Mercyhurst Prep grad Berchtold, seven from forward Jennie Thies, and four by guard Morgan Neighbors.
The Knights extended the lead to 47-27 on a fast-break layup by Doriyon Glass from Batts
with 12:34 to go.