Current magic numbers
No magic number is lit: 2 clubs still control their own fate.
The earliest (best case) the magic number can light up is Tue, Aug 25.
Simulations point to around Fri, Aug 28 (median; 80% range Tue, Aug 25 to Sun, Aug 30).
SoftBank's magic number is 24 (lit on Wed, Aug 5 at M37).
So when will the pennant be clinched? See the projected clinch dates
How many wins make the pennant line? See the pennant-line lookup
How does tonight's game move the odds? See tonight's scenario board
When will the magic number light up?
Central League
The share of outcomes in which the magic number lights up on each day. Lighting can also arrive through rival losses, so probability appears even on days the leader does not play. The vertical dashed line is the earliest (best-case) lighting date.
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.
Magic numbers
The smallest number of remaining wins that clinches the pennant regardless of what rivals do (an exact computation that accounts for remaining head-to-head games). Ties are resolved against the club in question, and equal percentages count as losing the tiebreaker (pessimistic convention). This is a different number from the "X more wins" on the pennant line chart, which is a simulated guide to reaching the line.
Central League
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| Team | Magic | Status | Left | Controls pennant |
|---|---|---|---|---|
| Hanshin | Not lit (in control) | 32 | Yes | |
| Yomiuri | Not lit (in control) | 30 | Yes | |
| DeNA | Needs help | 31 | No | |
| Yakult | Needs help | 32 | No | |
| Chunichi | Needs help | 28 | No | |
| Hiroshima | Needs help | 35 | No |
No magic number is lit (two or more clubs can still clinch on their own).
Pacific League
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| Team | Magic | Status | Left | Controls pennant |
|---|---|---|---|---|
| SoftBank | Lit | 31 | Yes | |
| Seibu | Needs help | 27 | No | |
| Nippon-Ham | Needs help | 27 | No | |
| ORIX | Needs help | 29 | No | |
| Lotte | Needs help | 34 | No | |
| Rakuten | Needs help | 32 | No |
On Wed, Aug 5, the magic number lit for SoftBank at 37 (retro-computed under the percentage-only rule).
The bar in the magic column shows the magic number as a share of remaining games. The longer the bar, the more of the remaining schedule must be won - the smaller the cushion.
Per-rival breakdown (who sets the magic number)
'Wins needed' is the number of remaining wins required to finish strictly ahead of that rival even if the rival maxes out its remaining games (accounting for remaining head-to-head matchups). The largest of these values is the magic number, and the rival that sets it is the 'target club'.
Breakdown from Hanshin's standpoint
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| Rival | Wins needed | Head-to-head left |
|---|---|---|
| Yomiuri Target club | 28 | 5 |
| DeNA | 20 | 7 |
| Yakult | 20 | 7 |
| Chunichi | 15 | 6 |
| Hiroshima | 18 | 7 |
Breakdown from SoftBank's standpoint
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| Rival | Wins needed | Head-to-head left |
|---|---|---|
| Seibu Target club | 24 | 5 |
| Nippon-Ham | 21 | 5 |
| ORIX | 16 | 8 |
| Lotte | 17 | 8 |
| Rakuten | 6 | 5 |
This season's magic number history (lit, dark, self-control lost and regained)
A day-by-day history recomputed from full game results (percentage-only test; ties and equal percentages resolved pessimistically).
Central League
| Date | Event |
|---|---|
| Sun, Jun 7 | Chunichi lose the ability to clinch on their own |
| Wed, Jun 10 | Chunichi regain the ability to clinch on their own |
| Sat, Jun 13 | Chunichi lose the ability to clinch on their own |
| Sun, Jun 14 | Chunichi regain the ability to clinch on their own |
| Tue, Jun 30 | Chunichi lose the ability to clinch on their own |
| Mon (hol), Jul 20 | Hiroshima lose the ability to clinch on their own |
| Fri, Jul 31 | DeNA lose the ability to clinch on their own |
| Sun, Aug 2 | Yakult lose the ability to clinch on their own |
| Tue, Aug 4 | DeNA regain the ability to clinch on their own |
| Thu, Aug 6 | DeNA lose the ability to clinch on their own |
| Sat, Aug 8 | DeNA regain the ability to clinch on their own |
| Tue (hol), Aug 11 | DeNA lose the ability to clinch on their own |
Pacific League
| Date | Event |
|---|---|
| Wed, Jun 10 | Rakuten lose the ability to clinch on their own |
| Fri, Jun 12 | Rakuten regain the ability to clinch on their own |
| Sat, Jun 13 | Rakuten lose the ability to clinch on their own |
| Mon (hol), Jul 20 | Lotte lose the ability to clinch on their own |
| Tue, Jul 21 | Lotte regain the ability to clinch on their own |
| Wed, Jul 22 | ORIX lose the ability to clinch on their own |
| Thu, Jul 23 | Lotte lose the ability to clinch on their own |
| Tue, Aug 4 | Seibu lose the ability to clinch on their own |
| Wed, Aug 5 | Nippon-Ham lose the ability to clinch on their own |
| Wed, Aug 5 | SoftBank light up a magic number of 37 |
Since lighting up on Wed, Aug 5 (M37), 18 days have passed and the number has dropped by 13.
The dashed line is a reference pace toward M0 at the projected clinch date median (Tue (hol), Sep 22) - the same statistical value as the clinch-date page.
Next game day scenarios - where does the magic number land?
Central League
Tue, Aug 25: Hanshin (vs D) × Yomiuri (vs S)
| Win | Tie | Loss | |
|---|---|---|---|
| Win | Carried over | Carried over | Lights up (M26) |
| Tie | Carried over | Carried over | Lights up (M27) |
| Loss | Carried over | Carried over | Carried over |
Rows = Hanshin's result. Columns = Yomiuri's result.
Each cell is an exact recomputation of whether a magic number lights up after those two results. 'Carried over' means those two results alone do not light it (other games' results may still do).
Pacific League
Tue, Aug 25: SoftBank (vs M) × Seibu (vs F)
| Win | Tie | Loss | |
|---|---|---|---|
| Win | M23 (−1) | M23 (−1) | M22 (−2) |
| Tie | M24 | M23 (−1) | M23 (−1) |
| Loss | M24 | M24 | M23 (−1) |
Rows = SoftBank's result. Columns = Seibu's result.
Each cell is the exact recomputed magic number after those two results. When a win coincides with a target-club loss, it can drop by 2 or more at once.
Other same-day games are left unplayed in the evaluation (if another rival loses or ties, the actual value is the same as the cell or smaller).
Magic number lighting dates, last 20 seasons (2006-2025)
This section lists past seasons' results. For the current season, see the status board at the top of the page.
For each season we retro-compute the first game day on which every other club had lost the ability to clinch on its own (= the lighting date), using the percentage-only pessimistic test.
Open the full list by year
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| Year | Central League | Pacific League | ||||
|---|---|---|---|---|---|---|
| Team | Lit on | M at lighting | Team | Lit on | M at lighting | |
| 2025 | Hanshin Tigers | Jul 27 | 42 | Fukuoka SoftBank Hawks | Sep 5 | 18 |
| 2024 | Yomiuri Giants | Sep 18 | 9 | Fukuoka SoftBank Hawks | Jul 30 | 42 |
| 2023 | Hanshin Tigers | Aug 16 | 29 | ORIX Buffaloes | Aug 26 | 24 |
| 2022 | Tokyo Yakult Swallows | Jul 2 | 53 | Fukuoka SoftBank Hawks ※ | Sep 15 | 11 |
| 2021 | Tokyo Yakult Swallows | Oct 8 | 11 | Chiba Lotte Marines ※ | Oct 14 | 9 |
| 2020 | Yomiuri Giants | Sep 15 | 38 | Fukuoka SoftBank Hawks | Oct 21 | 8 |
| 2019 | Yomiuri Giants | Aug 24 | 20 | Fukuoka SoftBank Hawks ※ | Sep 12 | 12 |
| 2018 | Hiroshima Toyo Carp | Aug 1 | 44 | Saitama Seibu Lions | Sep 17 | 11 |
| 2017 | Hiroshima Toyo Carp | Aug 8 | 33 | Fukuoka SoftBank Hawks | Sep 1 | 16 |
| 2016 | Hiroshima Toyo Carp | Aug 24 | 20 | Fukuoka SoftBank Hawks ※ | Sep 2 | 20 |
| 2015 | Tokyo Yakult Swallows | Sep 27 | 3 | Fukuoka SoftBank Hawks | Aug 5 | 38 |
| 2014 | Yomiuri Giants | Sep 4 | 22 | ORIX Buffaloes ※ | Sep 25 | 7 |
| 2013 | Yomiuri Giants | Aug 9 | 39 | Tohoku Rakuten Golden Eagles | Aug 25 | 29 |
| 2012 | Yomiuri Giants | Aug 23 | 30 | Hokkaido Nippon-Ham Fighters | Sep 28 | 4 |
| 2011 | Chunichi Dragons | Oct 12 | 4 | Fukuoka SoftBank Hawks | Sep 17 | 17 |
| 2010 | Hanshin Tigers ※ | Sep 9 | 19 | Saitama Seibu Lions ※ | Sep 11 | 8 |
| 2009 | Yomiuri Giants | Aug 27 | 26 | Hokkaido Nippon-Ham Fighters | Aug 28 | 29 |
| 2008 | Hanshin Tigers ※ | Jul 22 | 46 | Saitama Seibu Lions | Aug 19 | 28 |
| 2007 | Chunichi Dragons ※ | Sep 24 | 7 | Hokkaido Nippon-Ham Fighters | Sep 20 | 10 |
| 2006 | Chunichi Dragons | Aug 12 | 40 | Seibu Lions ※ | Sep 5 | 14 |
Years marked ※ are those where the club that lit the magic number differs from the official champion (e.g. it went dark and another club came back).
Magic numbers, formally: lighting, M0, going dark and relighting
The magic number M is the smallest number of remaining wins that clinches the pennant regardless of what rivals do. It is an exact computation that accounts for remaining head-to-head games, assuming the most favorable allocation - winning first the games that give rivals nothing. The day M reaches 0 is the clinch date.
By convention the magic number 'lights up' when every other club has lost the ability to clinch on its own. It can go dark again after a losing stretch (a rival's self-control can revive), so a lit number is not a clinched pennant. A dark number can relight later, and the lit club can even change. The season-history section of this page lists every lighting, unlighting and relighting with its date.
The target club: the rival that sets the number
The magic number can be computed independently against each rival: 'how many of my remaining wins guarantee finishing strictly ahead of this rival even if it maxes out its remaining games'. The largest of those per-rival values is M, and the rival that produces it is the 'target club'. When the target club loses, M can drop without the leader even playing.
The target is not fixed. If the target club keeps losing and its requirement falls, the next rival becomes the new target. The per-rival breakdown table on this page shows which club currently sets M, how many wins are needed against each rival, and how many head-to-head games remain.
Lighting conditions and self-control: elimination it is not
The lighting condition is that exactly one club in the league still controls its own fate. Controlling your own fate means winning out would clinch the pennant regardless of other results. In other words, a magic number lights up not when a club achieves something, but at the moment every other club's self-control disappears.
Losing self-control is not elimination: the club can still win the pennant if rivals drop games, and control can be regained as the race unfolds. In this page's test, ties are resolved in the least favorable way for the club in question (as losses) and equal percentages count as losing the tiebreaker (a pessimistic convention).
How M falls: sometimes by 2 or more at once
The basic pattern is 'your win takes 1 off; a target-club loss takes 1 off'. Beating the target club head-to-head does both at once, and if the target changes at the same time, the number can move even further. Conversely, your own loss never increases M (it just fails to shrink) - but if a rival regains self-control, the number goes dark.
So that you never need to memorize these rules, the scenario table on this page recomputes M exactly for every win-loss combination of the next game day's cards. The description above is only a guide; the exact values in the scenario table are authoritative.
Frequently asked questions
What is a magic number?
The smallest number of remaining wins that clinches the pennant regardless of rivals. It 'lights up' when every other club loses the ability to clinch on its own, and the day it reaches 0 is the clinch date.
What is the magic number's 'target club'?
Among the per-rival wins-needed values, the rival that produces the largest one. Since the magic number equals that maximum, a target-club loss can shrink M even on the leader's day off. The target changes as the standings evolve.
Can a lit magic number disappear?
Yes. A lit number means every other club has lost self-control, so a losing stretch that revives any rival's self-control puts the number out. It relights when the condition holds again. This page's season history lists each lighting, unlighting and relighting with dates.
What happens at M0?
The day M reaches 0 is the clinch date (by percentage alone). For the outlook on when M0 is likely - the projected clinch-date distribution - see the projected clinch dates page.
Are the lighting forecasts official or guaranteed?
No. The 'earliest' date is a best-case guide assuming the most favorable run of results, and the 'projected' date is a statistical distribution (median and 80% range) from simulations of the remaining games. Neither guarantees an outcome, and both move daily with the season. Actual game results decide the lighting.