NPB Pennant Race Odds 2026: Championship and Climax Series Probabilities

Central League

Leader: Hanshin - Pennant odds 74.9%

Pacific League

Leader: SoftBank - Pennant odds 97.8%

end of Aug 16, 2026 · npbc.media

NPB standings are decided by winning percentage, with ties excluded from the denominator. This page runs tens of thousands of statistical simulations of the remaining schedule to estimate each club's championship and Climax Series odds. The numbers are model estimates, not official announcements.

In the Last 10 column, a tall dark bar is a win, a short light bar a loss, and a thin line a tie - the same encoding as the win-loss calendar.

'In control / Needs help' shows whether a club can still clinch the pennant on its own by winning out; M is the lit magic number.

Central League

Scroll right for W-L, PCT and more

Rank Team Pennant odds Climax Series odds W-L-T PCT GB Left Last 10
1 HanshinIn control 74.9% 100% 59-46-1 .562 37 6-4
2 YomiuriIn control 25% 99.8% 57-48-2 .543 2.0 36 5-5
3 YakultNeeds help 0% 46.8% 49-55-1 .471 9.5 38 5-5
4 DeNANeeds help 0.1% 43.5% 48-56-3 .462 10.5 36 5-5
5 ChunichiNeeds help 0% 8.7% 46-62-1 .426 14.5 34 5-5
6 HiroshimaNeeds help 0% 1.3% 40-58-4 .408 15.5 41 3-7

Pacific League

Scroll right for W-L, PCT and more

Rank Team Pennant odds Climax Series odds W-L-T PCT GB Left Last 10
1 SoftBankM28 97.8% 100% 67-39-1 .632 36 5-5
2 SeibuNeeds help 1.2% 98.4% 60-47-3 .561 7.5 33 5-5
3 Nippon-HamNeeds help 1% 98.1% 62-49-0 .559 7.5 32 6-4
4 ORIXNeeds help 0% 2.5% 53-54-2 .495 14.5 34 4-6
5 LotteNeeds help 0% 1% 48-53-3 .475 16.5 39 5-5
6 RakutenNeeds help 0% 0% 41-63-1 .394 25.0 38 5-5

All probabilities are model estimates and do not guarantee outcomes. The table below is reference data compiled by this site, not an official announcement.

Season highlights

Central League Longest win streak: Yomiuri, 7 in a row Best games over .500: Hanshin at +14 Days in first place: Hanshin (67 days)
Pacific League Longest win streak: Nippon-Ham, 9 in a row Best games over .500: SoftBank at +30 Days in first place: SoftBank (63 days)

Days in first place are counted per day with games played.

When will the pennant be decided?

Central LeagueMedian clinch date: Sep 29, 2026

Pacific LeagueMedian clinch date: Sep 21, 2026

All probabilities are model estimates and do not guarantee outcomes.

Games over .500

Central LeagueBest W−L balance: Hanshin +13

Pacific LeagueBest W−L balance: SoftBank +28

Pennant odds over time

The same model re-run on each day's data, backfilled to opening day.

Central League Pennant odds over time end of Aug 16, 2026 npbc.media Interleague 0% 20% 40% 60% 80% 100% Apr May Jun Jul Aug T 74.9% G 25% DB 0.1% C 0% D 0% S 0%
Pacific League Pennant odds over time end of Aug 16, 2026 npbc.media Interleague 0% 20% 40% 60% 80% 100% Apr May Jun Jul Aug H 97.8% L 1.2% F 1% B 0% E 0% M 0%

Final-rank probability matrix

Each cell is the share (%) of 20,000 simulation trials that ended at that rank (blank under 0.5%). The range column shows the best and worst ranks that appeared at least once.

Central League Final-rank probability matrixend of Aug 16, 2026npbc.media

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Team #1 #2 #3 #4 #5 #6 Range
Hanshin 75 25 #1-#4
Yomiuri 25 73 2 #1-#5
Yakult 1 45 35 15 3 #1-#6
DeNA 1 42 39 14 3 #1-#6
Chunichi 9 20 50 21 #2-#6
Hiroshima 1 5 21 73 #2-#6
Pacific League Final-rank probability matrixend of Aug 16, 2026npbc.media

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Team #1 #2 #3 #4 #5 #6 Range
SoftBank 98 2 #1-#3
Seibu 1 52 45 2 #1-#5
Nippon-Ham 1 45 52 2 #1-#5
ORIX 2 67 30 #2-#6
Lotte 1 29 68 2 #2-#6
Rakuten 2 98 #4-#6

All probabilities are model estimates and do not guarantee outcomes.

Games-behind ladder

Current positions measured in games behind the leader.

Central League Games-behind ladder end of Aug 16, 2026 npbc.media 0 5 10 15 GB Hanshin 0.0 / 59-46-1 Yomiuri 2.0 / 57-48-2 Yakult 9.5 / 49-55-1 DeNA 10.5 / 48-56-3 Chunichi 14.5 / 46-62-1 Hiroshima 15.5 / 40-58-4
Pacific League Games-behind ladder end of Aug 16, 2026 npbc.media 0 5 10 15 20 25 GB SoftBank 0.0 / 67-39-1 Nippon-Ham 7.5 / 62-49-0 Seibu 7.5 / 60-47-3 ORIX 14.5 / 53-54-2 Lotte 16.5 / 48-53-3 Rakuten 25.0 / 41-63-1

Pennant and Climax Series win lines

Central LeagueMedian pennant line: 80 wins / Median CS line: 68 wins

Pacific LeagueMedian pennant line: 89 wins / Median CS line: 77 wins

All probabilities are model estimates and do not guarantee outcomes.

True strength (Pythagorean)

Central LeagueLargest gap vs expectation: Yakult +5.5

Pacific LeagueLargest gap vs expectation: ORIX +5.8

Team strength rating (Elo)

Central LeagueLeague leader: Hanshin 1531.7

Pacific LeagueLeague leader: SoftBank 1562.7

Remaining head-to-head games

Derived from the official standings (25 games per league opponent and 3 per interleague opponent, minus games played).

Central League

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T G S DB D C Interleague Total
Hanshin 5 10 9 6 7 0 37
Yomiuri 5 6 9 5 11 0 36
Yakult 10 6 6 9 7 0 38
DeNA 9 9 6 5 7 0 36
Chunichi 6 5 9 5 9 0 34
Hiroshima 7 11 7 7 9 0 41

Pacific League

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H L F B M E Interleague Total
SoftBank 5 8 10 8 5 0 36
Seibu 5 5 8 6 9 0 33
Nippon-Ham 8 5 4 9 6 0 32
ORIX 10 8 4 5 7 0 34
Lotte 8 6 9 5 11 0 39
Rakuten 5 9 6 7 11 0 38

Pace projection for the remaining matchups

A projection of each club's final record and reference rank if its head-to-head pace so far continued through the remaining games. All remaining games are assumed to end in a decision (the tie count stays at its current value).

Central League

Team Current record Left Projected final Projected PCT Reference rank
Hanshin 59-46-1 37 81.2-60.8-1 .572 #1
Yomiuri 57-48-2 36 77.6-63.4-2 .550 #2
Yakult 49-55-1 38 66.6-75.4-1 .469 #3
DeNA 48-56-3 36 65.5-74.5-3 .468 #4
Chunichi 46-62-1 34 61.3-80.7-1 .431 #5
Hiroshima 40-58-4 41 57.8-81.2-4 .415 #6

Pacific League

Team Current record Left Projected final Projected PCT Reference rank
SoftBank 67-39-1 36 89.0-53.0-1 .627 #1
Seibu 60-47-3 33 76.7-63.3-3 .548 #2
Nippon-Ham 62-49-0 32 77.7-65.3-0 .544 #3
ORIX 53-54-2 34 70.3-70.7-2 .498 #4
Lotte 48-53-3 39 66.6-73.4-3 .475 #5
Rakuten 41-63-1 38 56.7-85.3-1 .399 #6

Each matchup so far is a small sample of at most a couple dozen games, so this extrapolation is a reference value only. Clubs with the same projected percentage share a rank; nothing here guarantees standings or results.

Impact of the next game

Conditional odds if a team wins or loses one game against the opponent with the most games remaining (a model assumption, which may differ from the actual schedule).

Central League

Scroll right for Climax Series scenarios

Team Assumed matchup Pennant odds Climax Series odds
Current After a win After a loss Current After a win After a loss
Hanshin vs Yakult 74.9% 77.7% +2.8 pt 70.8% −4.1 pt 100% 100% ±0.0 pt 100% ±0.0 pt
Yomiuri vs Hiroshima 25% 28.4% +3.4 pt 20.3% −4.7 pt 99.8% 99.8% ±0.0 pt 99.7% −0.1 pt
DeNA vs Yomiuri 0.1% 0.1% ±0.0 pt 0% −0.1 pt 43.5% 48.8% +5.3 pt 38.7% −4.8 pt
Yakult vs Hanshin 0% 0.1% +0.1 pt 0% ±0.0 pt 46.8% 51.8% +5.0 pt 43.3% −3.5 pt
Chunichi vs Hiroshima 0% 0% ±0.0 pt 0% ±0.0 pt 8.7% 10.3% +1.6 pt 6.8% −1.9 pt
Hiroshima vs Yomiuri 0% 0% ±0.0 pt 0% ±0.0 pt 1.3% 1.7% +0.4 pt 1% −0.3 pt

Pacific League

Scroll right for Climax Series scenarios

Team Assumed matchup Pennant odds Climax Series odds
Current After a win After a loss Current After a win After a loss
SoftBank vs ORIX 97.8% 98.2% +0.4 pt 97.1% −0.7 pt 100% 100% ±0.0 pt 100% ±0.0 pt
Seibu vs Rakuten 1.2% 1.6% +0.4 pt 0.7% −0.5 pt 98.4% 98.7% +0.3 pt 97.8% −0.6 pt
Nippon-Ham vs Lotte 1% 1.2% +0.2 pt 0.7% −0.3 pt 98.1% 98.6% +0.5 pt 97.4% −0.7 pt
ORIX vs SoftBank 0% 0% ±0.0 pt 0% ±0.0 pt 2.5% 3.6% +1.1 pt 1.9% −0.6 pt
Lotte vs Rakuten 0% 0% ±0.0 pt 0% ±0.0 pt 1% 1.2% +0.2 pt 0.6% −0.4 pt
Rakuten vs Lotte 0% 0% ±0.0 pt 0% ±0.0 pt 0% 0% ±0.0 pt 0% ±0.0 pt

Pennant race simulator

Pick one club and adjust how many of its remaining games it wins; the pennant and Climax Series odds recalculate instantly. Everything runs in your browser; nothing you enter is sent anywhere. (Simulation, 4,000 trials)

Inputs for this date

  • Trials20,000
  • Tie rate (Central, observed)1.7%
  • Tie rate (Pacific, observed)1.5%

Standings are decided by winning percentage

An NPB regular season is 143 games per club: a 25-game round robin against each league rival (125 games) plus 18 interleague games. Standings are decided by winning percentage, computed as wins divided by decisions; tied games are not replayed and drop out of the denominator (per the Pacific League Agreement).

That is why a club can lead in wins yet trail in the standings: a team with more ties has a smaller denominator, so the same win total yields a higher percentage. Down the stretch, the tie count often becomes the decisive variable.

Tiebreakers differ between the two leagues

Tied winning percentages are resolved differently by league. The Central League ranks clubs by (1) most wins, (2) head-to-head record between the tied clubs, (3) record within the league, then (4) the previous season's standings. When three or more clubs tie in both percentage and wins, their combined head-to-head records are compared (per the 2015 agreement amendment).

The Pacific League has no wins criterion: it goes straight to (1) head-to-head record, (2) intra-league record over the 125 league games, then (3) the previous season's standings. The simulation on this page implements these official rules exactly when ranking each simulated season.

Climax Series qualification: finish in the top three

The top three clubs in each league reach the Climax Series. Second and third place meet in the First Stage (best of three), and the winner faces the pennant winner in the Final Stage (a six-game format in which the league champion receives an advantage; the exact form is set in each year's tournament outline). The Final Stage winner advances to the Nippon Series.

The Climax Series odds on this page are simply the share of simulations in which a club finishes third or higher. Even for clubs whose pennant hopes have faded, a top-three finish keeps a route to the Nippon Series open - which is why the race for third stays meaningful deep into the season.

What these numbers mean

The 'pennant odds' on this page are the share of tens of thousands of simulated seasons in which a club finished first; the 'Climax Series odds' are the share finishing in the top three. Each simulated season is ranked according to the official standings rules, including tiebreakers.

The numbers are estimates from this site's own statistical simulation, not official announcements. Home advantage, the actual order of the schedule, starting pitchers, injuries and trades are not modeled.

Disclaimer: what these numbers do not promise

Every probability on this page is a statistical model estimate and does not guarantee actual outcomes. This is not gambling or betting information and is not intended for such use. The numbers depend on the model's assumptions (strength estimates, tie rates, schedule handling) and do not reflect real-world factors such as injuries, trades or weather.

For official standings and results, always refer to Nippon Professional Baseball (npb.jp). This page is reference material based on this site's own statistical simulation.

Frequently asked questions

How are the pennant odds computed?

The remaining schedule is simulated tens of thousands of times with this site's own statistical model, each simulated season is ranked using the official rules, and the share of trials finishing first is shown as the pennant probability. The numbers are model estimates, not official announcements.

Which clubs qualify for the Climax Series?

The top three in each league. Second and third meet in a best-of-three First Stage; the winner faces the pennant winner in the Final Stage (six-game format with an advantage for the champion), and that winner goes to the Nippon Series.

How are ties in winning percentage broken?

Central League: most wins, then head-to-head record, then intra-league record, then the previous season's standings. Pacific League: head-to-head record, then intra-league record, then the previous season's standings. If three or more CL clubs tie in both percentage and wins, their combined head-to-head records are compared.

Do 100% or 0% mean it is mathematically decided?

Not necessarily. The display rounds the share of simulation trials, so a very small (or large) probability can appear as 0% (or 100%). This page does not compute formal clinch or elimination numbers. The reachable-wins bars show each club's win-out and lose-out bounds.

Sources and references

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