Eric Woodley added a pair of goals and Colton Ebbett picked up a single marker for Moose Jaw, who found themselves in a scoreless draw after the first and leading 3-0 through two. Carter Michaluk had two assists.
Walker Williams and Luke Andrews were in goal.
The Mustangs improved to 5-0 in league action with the win, having scored 47 goals while giving up only 13. They return to action Tuesday, May 28 when they host Regina 2 (6:30 p.m., Mosaic Place).