The Quakers (5-3, 4-1 Ivy League) needed more time to pull away than they did last year, when they took a 28-0 lead en route to a 52-10 victory.
The Tigers (1-7, 1-4) blocked two punts in the first quarter, taking possession at the 11-yard line on both occasions, but settled for two field goals.
After Jeff Jack’s 3-yard touchdown gave Penn a 14-6 lead, Patrick Jacob kicked his third field goal for Princeton, a 44-yarder with 2:16 to go before halftime. The Tigers would not score again.
Chuck Dibilio led Princeton with 130 yards on 29 carries.