The Eagles led 10-0 after one quarter and 28-8 at the half. Oakridge outscored Calvary 22-19 in the second half.
Anna Lundquist led Oakridge with 12 points. Mallori Whipple added 10.
McKena Wilson led Calvary with 19 points, five rebounds and three steals.
Oakridge (9-3, 4-2) will host Manistee on Tuesday evening.
Calvary Christian (2-7, 0-0) will travel to Saugatuck on Tuesday evening.