Washington was 7 of 12 from the floor, including 3 of 5 from long range. Dominique drained two 3-pointers, finished on 7-of-13 shooting and grabbed eight rebounds. Trevis Wyche dished nine assists and had four steals, and Quadir Welton added 12 points for St. Peter's (10-11, 4-6 Metro Atlantic), which shot 27 of 51 for 52.9 percent from the field.
St. Peter's used a 21-5 run to stretch its lead to 58-37 with 8:28 to play, and the Peacocks led by double digits the rest of the way.
Lavon Long led the Saints with 14 points on 5-of-9 shooting, and was the only player to reach double figures for Siena (8-11, 5-5).