The Terps held the Nittany Lions scoreless for more than 26 minutes in the second half.
The Terps allowed just two goals in the second half to win its first conference game of the season.
Daniel Kelly scored the game-winner to hand the Cavaliers their first loss of the season.
Daniel Maltz and Braden Erksa scored four while Jack Koras added three goals in the Terps' win over the Great Danes.
The Terps fell in their first overtime game since a sudden-death winner against the Fighting Irish in 2021.
The Terps and the Fighting Irish have faced off 10 times in the last eight years.
The freshman notched a 73 percent save rate against Princeton.
The Terps have won six straight matchups against the Tigers.