Navy couldn't hold a lead in the second half and fell at Northern Kentucky, 72-65 on Saturday in Highland Heights, Ky.
Northern Kentucky (4-7) trailed by as many as seven points in the second half, but took the lead, 61-60, on a 3-pointer by guard Todd Johnson with 4:43 to play.
After Navy went back ahead on two free throws by guard Brandon Venturini, Northern Kentucky scored the next five points to jump back on top, 66-62.
Forward Worth Smith brought Navy (5-5) back to within one by knocking down a 3-pointer, but Norse guard Tyler White answered with a 3-pointer of his own with the shot clock expiring.
Navy didn't score again, and the Norse went 3-for-4 from the free throw line down the stretch to clinch it.
Venturini led all scorers with 20 points, going 7-for-11 from the field. Smith had 15, and guard Kendall Knorr added 13. The Navy bench managed only three points on 1-for-6 shooting.
Johnson and guard Jalen Billups led Northern Kentucky with 16 points, with Billups also pulling down 11 rebounds. White and guard Jordan Jackson had 11.
The teams combined to go 16-for-32 from 3-point range, with Navy making 7-of-13 from beyond the arc.
Navy led, 29-23, at half time.