Union College scored goals 13 minutes apart late in the second half and defeated the Yellowjackets in field hockey, 3-1, on Saturday.
Rochester is 7-6 overall, 2-3 in the Liberty League with a trip to Vassar and RPI in two weeks. The top four teams in the standings qualify for the league's post-season tournament.
Union took a 1-0 lead at 19:09 (Kristin Murphy scored from Chelsea Harris). Rochester equalized with 8:32 left in the first half. Mary DiMatteo scored the goal. Heidi Davies had the assist.
The Dutchwomen used goals from Jessica Trotter (with 13:25 to play) and Jordan Reardon (with 24 seconds left) to nail it down.
Rachel Cahan made eight saves in goal for Rochester.