Jay Calhoun kept the Peninsula Oilers (7-3) off the board during his seven innings of work and the Matsu Miners (2-5) beat the Peninsula Oilers, 3-0.
Calhoun allowed four hits, two walks and struck out two.
Clint Freeman racked up two RBIs on one hit for the Matsu Miners. He homered in the fourth inning.
Despite the loss, the Peninsula Oilers' Jordan Mills dominated the Matsu Miners' batters, giving up three runs and striking out seven.
Mills ended up on the wrong side of the pitching decision, charged with his first loss of the year.