Freshman Aaron Kesselman led the offense with two goals and an assist, and Princeton scored four times in the second period to upset No. 12 Colgate 6-2 on Friday.
Kesselman, Matt Farris, Brodie Zuk and Jack Berger scored in the middle frame for the Tigers (6-10-4, 5-8-1 ECAC Hockey).
Austin Smith scored twice for the Raiders (12-7-2, 6-3), who have lost three straight after a seven-game unbeaten streak.
Princeton goaltender Mike Condon made 10 of his 26 saves in the third period.
Berger scored his second goal of the night to complete the scoring with a short-handed goal at 14:28 of the third.
Colgate goaltender Eric Mihalik made 23 saves.
