Are there any cases where a 2nd place team upset the Korean Series when three bullpen players, including the closer, are out for the postseason?

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Baek Jeong-hyeon, Lee Seung-hyeon, and closer Kim Jae-hyeon are all out for the postseason due to injuries, and the 1st place team is facing an upset crisis despite having no injuries or major incidents.
This year might be the most extreme case of a 2nd place team upsetting the Korean Series in history.