Bronson Green intercepted a pass by Princeton's Connor Michelsen at the Dartmouth 5-yard line with 3 minutes remaining to help preserve a 24-17 victory in an Ivy League season finale on Saturday.
Michelsen entered the game on third-and-13 at the Dartmouth 24 after Tigers starter Quinn Epperly was sacked on second down.
After Green's return, with a personal foul penalty tacked on, brought the ball to the Dartmouth 46, the Big Green (5-5, 4-3) ran out the clock. Five of those runs were by Nick Schwieger, who finished with 157 yards on 30 carries.
The Tigers (1-9, 1-6), who trailed 15-14 at halftime, took a 17-15 lead on a 46-yard field goal by Patrick Jacob on its first possession of the second half.
Dartmouth answered with a 7-yard touchdown pass from Conner Kempe to Justin Foley and a 27-yard field goal by Foley Schmidt on its next two possessions.