Navy's second half. The Mids' defense, after giving up 36 points in the first half, allowed just seven in the second. Rover Ketric Buffin made an interception with 38 seconds left, giving Navy just enough time to set up for Joey Bullen's 44-yard field goal as time expired.
The first half, when Duke scored on five of seven possessions, and Navy failed to recognize big pass plays to Eron Riley that went for touchdowns of 76, 35, 9 yards.
Navy (2-2) faces rival Air Force (3-1) in the first round of the Commander in Chief's Trophy competition. The Midshipmen have won the trophy four consecutive years.