Pacific League CS Clinch Date (2026)

Pacific League

SoftBank Clinched
Seibu Clinched
Nippon-Ham Clinched

end of Sep 20, 2026 / npbc.media

As of the end of Sep 20, 2026: in the Pacific League, third-place Nippon-Ham have already clinched a CS berth.

This page tracks 'when will Climax Series berths be decided?' through a simulated distribution of projected clinch dates for the remaining schedule. CS berth magic numbers - how many more wins make a top-three finish mathematically certain - have their own page, as do pennant clinch dates and pennant magic numbers.

Projected Climax Series (top-three) clinch dates

For each club, when its Climax Series berth (a top-three finish) would likely be clinched if it does reach the top three. For how likely that is, see the CS odds page. Clubs whose top-three finish is already mathematically certain are shown as 'Clinched'.

Data table

Pacific League

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Team Climax Series odds Guide
SoftBank Clinched
Seibu Clinched
Nippon-Ham Clinched
ORIX 0%
Lotte 0%
Rakuten 0%

Remaining games are placed on their announced schedule dates (scheduled final day: Sun, Oct 4). Future rainouts and rescheduled games are not reflected. 3 game(s) without an announced make-up date are placed approximately.

A guide date is listed even for clubs shown at 0% as long as some probability remains before rounding; clubs whose outcome never appeared in the simulation are outside the forecast.

All probabilities are model estimates and do not guarantee outcomes. Probabilities are shown rounded to one decimal place: a displayed 100% does not mean mathematical certainty, nor does 0% mean elimination.

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Reading the projected Climax Series clinch dates

Projected dates come from the same model as the odds board: each simulated season records the day a top-three finish became mathematically certain, and the page shows the median of that distribution. These are distributions that move with the season, not fixed pronouncements.

The CS clinch test evaluates rivals one at a time - a safe-side relaxation that can run later (more cautious) than reality. Mapping remaining games onto calendar days also involves approximation, and rainouts or rescheduling are not reflected. Official announcements take precedence for any clinch.

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The same calculation as the odds board

Projected dates use the same calculation as the pennant race odds board. Each projected season is ranked with the official standings rules, tiebreakers included. The numbers are this site's own estimates, not official announcements.

Frequently asked questions

When are Climax Series berths clinched?

The projected dates on this page are statistical guides from simulations - the distribution of the day a top-three finish became mathematically certain - and do not guarantee outcomes. Clubs whose top-three finish is already mathematically certain are shown as clinched. Official announcements take precedence for any clinch.

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Sources and references

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