Johnson shut down UIndy to give Kentucky Wesleyan a chance to bring home the win in extras with a dominant outing from the pen.
KWC head coach Todd Lillpop turned the ball over to Johnson after starter Ryan Hundley turned in five innings of his own for a no-decision.
Johnson faced just one batter over the minimum in five scoreless frames and struck out six while walking none. He retired nine straight from the eighth inning to finish.