Postseason Odds, Forecast version

Playing the rest of the season a million times

with some help from my forecasts

by Clay Davenport

See the original version of this report, based entirely on real data (no projections).

*** Now with ** 3 ** wild cards per league ***

Generated Mon Sep 14 07:53:18 AM EDT 2026


Average wins by position in AL East:  96.9 92.8 88.3 81.4 77.4
AL East           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs
Rays              90   59   .547   96.8   65.2   90.85400    9.14600  100.00000
Yankees           86   63   .544   92.8   69.2    9.12350   90.87650  100.00000
Red Sox           82   68   .558   88.3   73.7     .02250   99.95610   99.97860
Blue Jays         75   75   .510   81.3   80.7     .00000   41.51090   41.51090
Orioles           72   78   .495   77.5   84.5     .00000    1.32410    1.32410

Average wins by position in AL Central:  83.7 81.5 77.8 75.8 71.2
AL Central        W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs
White Sox         76   73   .490   82.6   79.4   49.05150   22.80120   71.85270
Guardians         76   74   .533   82.6   79.4   50.70450   23.04130   73.74580
Tigers            70   79   .503   76.5   85.5     .13640     .53730     .67370
Twins             70   79   .517   77.0   85.0     .10760     .51540     .62300
Royals            66   84   .462   71.3   90.7     .00000     .00000     .00000

Average wins by position in AL west:  82.0 79.9 77.3 65.8 61.2
AL West           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs
Astros            75   75   .528   81.6   80.4   70.91440    3.76880   74.68320
Rangers           74   76   .510   80.1   81.9   26.25370    6.14740   32.40110
Mariners          70   80   .578   77.5   84.5    2.83190     .37500    3.20690
Athletics         61   89   .409   65.7   96.3     .00000     .00000     .00000
Angels            56   93   .427   61.2  100.8     .00000     .00000     .00000

Average wins by AL First Wild Card:  92.8
Average wins by AL Second Wild Card:  88.3
Average wins by AL Third Wild Card:  82.4

Average wins by position in NL East:  94.2 89.5 79.1 76.1 74.0
NL East           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs
Braves            88   62   .521   94.2   67.8   97.01490    2.98480   99.99970
Phillies          83   67   .567   89.5   72.5    2.98510   94.73030   97.71540
Marlins           74   76   .452   79.0   83.0     .00000     .02370     .02370
Nationals         70   81   .440   74.7   87.3     .00000     .00000     .00000
Mets              69   80   .506   75.5   86.5     .00000     .00000     .00000

Average wins by position in NL Central:  99.5 89.4 82.1 79.4 75.0
NL Central        W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs
Brewers           93   57   .583   99.5   62.5   99.99910     .00090  100.00000
Cubs              83   67   .528   89.4   72.6     .00090   97.56490   97.56580
Pirates           75   75   .548   81.7   80.3     .00000     .29650     .29650
Cardinals         74   76   .472   79.7   82.3     .00000     .00820     .00820
Reds              70   79   .438   75.0   87.0     .00000     .00000     .00000

Average wins by position in NL West:  98.8 87.9 85.0 66.4 60.7
NL West           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs
Dodgers           90   59   .635   98.8   63.2   99.99740     .00260  100.00000
Padres            81   68   .517   87.6   74.4     .00260   80.11070   80.11330
Diamondbacks      79   71   .517   85.3   76.7     .00000   24.27740   24.27740
Giants            62   88   .426   66.4   95.6     .00000     .00000     .00000
Rockies           55   94   .441   60.7  101.3     .00000     .00000     .00000

Average wins by NL First Wild Card:  90.5
Average wins by NL Second Wild Card:  89.0
Average wins by NL Third Wild Card:  87.4

As the title says, the post-season odds report was compiled by running a Monte Carlo simulation of the rest of the season one million times. Current wins, losses and expected winning percentages are taken from the Adjusted Standings Report.

Expected winning percentages (EWP) is being driven entirely by the projections of player performance on our depth charts. The performances of every player on a team are combined to derive total team runs scored and allowed, which are averaged and normalized on a league basis, and used to calculate a won/lost record. The disadvantage of this approach is that the team's rating is entirely based on a projection of player performance. The advantage is that it can immediately respond to changes in the team's lineup, due to injury or trade. However, we still allow for uncertainty in the EWP by sampling a normal distribution centered on the EWP for each "seasonal" run. To simulate the normal 4% home-field advantage, the home team gets a .020 point bonus, while the visitors take a 0.020 penalty. The likelihood of winning each game is determined by the log5 method.

W and L are the team's wins and losses through yesterday's games.

Pct3 is the expected winning percentage, taken from W3 and L3, with the regression-to-mean component.

Avg W and Avg L are the average number of wins and losses each team finishes over the million season iterations.

Champions is how often, in percentage terms, this team won the championship of their division. Ties are not broken, but credited as 0.5 championships apiece (for a two-way tie), .333 apiece for a three-way tie, .25 for four-way, etc. This is why the final decimal place is not an error!

Wild Card is how often, in percentage terms, this team won the wild card. As with championships, ties are not broken, but apportioned among the tied teams.

Playoffs is how often, in percentage terms, the team either wins the division or the wild card.