Seattle right-hander Bryan Woo went five innings in his second consecutive scoreless start.
Find out how to watch tonight’s Bells game in Wenatchee as they look to continue their WCL title defense.
Zia Cooke finished with 16 points off the bench for Seattle.
The Bells will play in Wenatchee on Tuesday for a chance to return to the WCL title game.
Emerson Hancock (6-7) gave up two runs on nine hits over 4 2/3 innings.
Find out how to watch the Bells’ playoff opener on the road tonight before they return to Bellingham for Game 2 on Saturday.
The Mariners fell to the Detroit Tigers 11-0 in their rubber match this afternoon.
Andrés Muñoz pitched a 1-2-3 ninth, striking out two to earn his 20th save this season.
The Bells have already clinched a postseason berth, with their first home playoff game coming on Saturday.
Seranthony Domínguez allowed four runs while only recording one out in his Mariners debut.