At Bar Harbor, Ben Walls struck out seven in going the distance on the mound and posted two singles and an RBI to paced the fifth-seeded Trojans past No. 12 Old Town.
Colin Moores singled twice for Mount Desert Island (10-7).
For Old Town (8-9), D.J. Monteith hit two singles with an RBI and Zac Miller stroked a pinch-hit, two-run double.
Old Town 200 000 2 — 4
MDI 200 202 x — 6
Archer and Richardson; Walls and Alley