The sophomore Parks was 19 for 23 from the foul line in his eighth straight game with double-digit scoring and second 20-point game of his career. Stephen Maxwell added 10 points and nine rebounds.
CSUN (9-22, 4-11 Big West) opened the second half with six straight points after it was 36-all at halftime. The Matadors led until Riverside (14-14, 7-7) tied it 68-all on Taylor Johns' reverse layup - giving him 1,000 career points.
But CSNU pulled away with seven straight points, keeping the Highlanders from taking any lead in the second half.