At Thorndike, Jordan Carter scattered six hits over six innings while striking out four and walking two to help the Mariners prevail.
Nick Judge paced the winners of Rockland/Thomaston with three hits and a run. Drew Townsend and Zach Peaco each added a double with Townsend scoring a run.
Nathan Wren notched two hits for Mount View.
Oceanside 010 021 0 — 4 8 0
Mount View 000 010 0 — 1 6 4
Carter, Altender (7); Lord, Wren (6)