At Howland, Penobscot Valley erased an early 1-0 deficit to beat the Mariners.
Teddy Hallett had two goals and an assist for the Howlers. Grant Doane also scored and assisted on one.
Pat Duddy scored an unassisted goal just 35 seconds into the game for the Mariners.
Goalie Joe Higgins stopped 7 of 8 shots for the Howlers.