At Machias, Finn Janssen scored from 22 yards out with 19:48 left in the second half, giving the Bulldogs the margin of victory.
Reid DeRosier staked No. 13 Penobscot Valley of Howland (5-9-1) to a 1-0 lead in the first half. Griffin Libby made three saves on 14 shots.
Dustin Getchell scored the tying goal off a goal-line scramble in the first half for No. 4 Machias (9-4-2), which got four saves on eight shots from A.J. Dolley.