Hinrichs totaled 10 points and a game-high 12 rebounds to help Lafayette (12-13, 5-3 Patriot League) outrebound Navy 35-24 and outscore it in the paint 24-16.
Navy (7-17, 1-7) scored the first eight points of the game, but Lafayette fought back to take a 14-12 lead on Rufer's 3-pointer at the 11:04 mark. Lafayette led at halftime 35-20.
Lafayette shot 52.2 percent (24 of 46) while holding Navy to just 37.3 percent (19 of 51).
The Leopards led by as many as 25 points.
The Midshipmen were led by Worth Smith with 13 points, but he was the only player for Navy in double figures.
Notre Dame assistant Martin Ingelsby has been hired as Delaware's new head men's basketball coach, sources told ESPN's Jeff Borzello.
Michigan State-Duke in the ACC/Big Ten Challenge will pit two of the best recruiting classes in the nation. Here's a look at the all the games.
The ACC/Big Ten Challenge will be highlighted by Duke's tilt with Michigan State and Indiana's showdown with North Carolina.