At Thomaston, winning pitcher Rachel Frye had three singles and drove in a run and Emma Davis tripled and singled and knocked in a run as Oceanside improved to 9-0 while Belfast fell to 4-4.
Kennadi Grover had two singles and an RBI for the winners.
Killyan Richards had two singles and an RBI for Belfast.
Belfast(4-4) 040 200 1 7-7-1
Oceanside(9-0) 330 310 x 10-11-2
Littlefield and Lapham; Frye and Curtis