Zach Finley collected 13 points for Princeton as his team committed 20 turnovers.
Tyler Bernardini scored 11 points for Penn. Brian Grandieri contributed 10 points, eight rebounds, two assists and three steals in his final game.
This is the first season in 20 years that neither team walked away from their last matchup without the Ivy League title.
Cornell won the league and will represent the Ivies at the NCAA tournament.