| 2018 Pacific League Climax Series | |||||||||||||
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| First stage | |||||||||||||
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| Dates | October 13–15 | ||||||||||||
| Final stage | |||||||||||||
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| Dates | October 17–21 | ||||||||||||
| MVP | Yuki Yanagita (Hawks) | ||||||||||||
The 2018 Pacific League Climax Series (PLCS) consisted of two consecutive series, Stage 1 being a best-of-three series and Stage 2 being a best-of-six with the top seed being awarded a one-win advantage. The winner of the series advanced to the 2018 Japan Series, where they competed against the 2018 Central League Climax Series winner. The top three regular-season finishers played in the two series. The PLCS began on with the first game of Stage 1 on October 13.