The Green River (4-22) jumped out to an early lead, but were unable to hold on and lost 2-1 to the Lower Columbia (22-6) on Saturday.
An RBI single by Mason Dunning gave the Lower Columbia the lead in the seventh inning.
Tanner Olson picked up the win for the Lower Columbia. Olson allowed no earned runs, four hits and no walks while striking out three over seven innings of work.
Christian Meister was charged with his third loss of the year. He lasted just two innings, walked one, struck out one, and allowed two runs.