Wyoming East erupted for a seven-run fourth and went on to beat River View, 10-0, in five innings in Region 3, Section 3 action at Mount View on Wednesday evening.
"That was the best hitting we've done this year by far," said East coach Robert "Doc" Warner. "We hit some rockets."
East (9-11) advanced to the championship game on Thursday evening.
The Lady Warriors will clinch the title if they win and play another game if they lose.
Emily Day struck out six and gave up just two singles for WEHS.
Brianne Pertee was 4-4 with a triple at the plate, and senior Ally Hatfield had three hits.
Day was 2-2.
"That's how we should have been hitting all year," Warner commented.
A win will put East into next week's regionals against Liberty.