At Winslow, James Philbrick scored the first of his two first-half goals only 3:01 into the contest, off an assist from Trevor Diemer, sending the fifth-seeded Mustangs on the way to victory.
Philbrick then converted a Jack Simpson feed 15 1/2 minutes later for 13-3 Mount View of Thorndike. Tim Bennett capped the scoring in the first half with Diemer posting an assist.
Chris Montminy made eight saves on 11 shots for the Mustangs.
Alex Berard made six saves on 19 shots for No. 4 Winslow, which wound up 11-4.