Diggy Coit made eight 3-pointers and scored 31 points for the Terrapins (6-5, 0-2), who lost center Pharrel Payne to a right leg injury late in the first half.
Navy edged Army 17-16 in a dramatic, last-minute finish that capped a day defined by tradition, tension and spectacle in the 126th game between the teams.
The Midshipmen had to ride out two turnovers from their star quarterback, but in the end, Blake Horvath delivered the go-ahead touchdown pass when they needed him to.
“This is a very momentous and historic day for the Orioles franchise,” president of baseball operations Mike Elias said at the news conference to introduce the team’s $155 million first baseman.