Mike Cavataio's jumper with just over 2 minutes left put Holy Cross up 78-76, but Sugars hit a 3 to spark a 7-2 run the rest of the way to seal it for Navy. Harris capped the Navy spree on a jumper with 11 seconds left for the final margin.
O.J. Avworo added 14 points and Greg Brown had 10 for the Midshipmen (13-13, 7-4 Patriot League), who shot 16-for-20 from the free throw line (80 percent). The Crusaders were 17-for-25 (68 percent) from the charity stripe.
The Midshipmen scored 26 points off of 15 turnovers while committing just eight of their own.