Stillwater warms up Thursday before its girls lacrosse state tournament semifinal. (Theo Franz/For the Minnesota Star Tribune)

Stillwater had unfinished business. And this time, the Ponies finished the job.

After giving up a four-goal lead and watching Park of Cottage Grove erase a deficit late in the second half, Stillwater got a game-winner from senior Rayna Malmberg with 10 seconds left, lifting the No. 3 seed Ponies to an 11-10 victory over No. 2 Park in the girls lacrosse state semifinals Thursday at Eden Prairie High School.

The win sends Stillwater (15-2) to the state championship game against undefeated Prior Lake on Saturday. Park (17-1), the Suburban East champion, hadn’t lost this season and had beaten the Ponies 7-6.

For more on the girls lacrosse state semifinals, click here to read this story on startribune.com.