Three different players scored as the Bulldogs (7-2-1) downed the Mustangs (1-10) at Waterboro.
Kendall Sniper scored in the first half, converting from Toni Stevenson. In the second half, Eliza Stein set up Annika More for the goal before Isabella Moore scored from Audrey Watson.
Caroline Lerch had three saves for Portland. Madison Gray had 14 saves for Massabesic.