At Howland, Bethany Heald hit a two-run single to spearhead a three-run third inning as the Howlers remained undefeated through 15 games.
Kayla Dube fired a two-hitter with 15 strikeouts for Penobscot Valley.
Courtney Stevens and Ashley Randall singled for Katahdin of Stacyville.
Katahdin 001 000 0 — 1
PVHS 103 000 x — 4
Randall and Knowles; Dube and Hope