In the end, Sandy Valley tallied a run in the bottom of the 10th for a 3-2 win and trip to Saturday's regional final.
The Chargers scored a run in the first inning.
Sandy Valley came back with two runs.
Edison forced extra innings, scoring a run with two outs in the top of the seventh.
It stayed that way until the bottom of the 10th.
Sandy Valley loaded the bases and then scored on a play of the plate.
The Chargers finished the season at 23-8 and ranked second in the state coaches poll.