"That was a great play; Kirstin was so good on it," Tomaschik added. "I know we had errors, but we did have huge plays, too, when we needed them. We just have to keep working hard on defense and keep it up."
Southern tied the game at 1 in the bottom of the second when Erin Troup had a single to shallow right field to score Haley Levan.
The Tigers then cut the deficit to 4-2 in the third when Taylor Hoffman hit a single down the left-field line to drive home Blass.
The win put Southern Columbia set up a third showdown with Warrior Run, the defending Class AA champions, in next week's semifinals. The Defenders won both meetings this year.
"We all are looking forward for a rematch. We really want to play them again, hopefully beat them," Tomaschik said laughing.
"It's going to be a game no matter what, but I feel we have confidence," the senior Tiger added. "We could've beat them both games before. I feel like now with the win and things, we'll feel a little more confident going into it and want to win it more, I think."