Sally Butler, Ali Pankowski and Denna Laing scored, and senior Rachel Weber made 15 saves as Princeton beat Union 3-0 on Saturday.
Playing at home for the last time during the 2011-12 season, Princeton honored the Class of 2012 prior to the start of the game.
The Class of 2012 includes Danielle DiCesare, Ann-Marie Elvin, Julie Johnson, Heather Landry, Paula Romanchuk, Charissa Stadnyk and Weber for Princeton, and Lauren Hoffman, Molly Kate Devin, Lauren Cromartie, Kayleigh Melia, Dania Simmonds, Chelsey Heinhuis, Emilie Arseneault and Kate Gallagher for Union.
Gallagher made 28 saves for Union.