At Deer Isle, Sam Grindle had four hits, including a home run, and two RBIs and Tyler Robbins doubled and singled to drive in three runs to lead the Mariner offense.
Grindle also pitched two scoreless innings to earn the save.
For Katahdin of Stacyville, Billy Livesey homered and singled, driving in two, and Shey Lane and Jordan Russell each doubled.
DI-S 202-400-0 — 8-6-2
Katahdin 220-210-0 — 7-7-2