Postseason Odds

Playing the rest of the season a million times

by Clay Davenport

See the Forecast-adjusted version of this report.

Generated Sun Sep 14 07:52:25 AM EDT 2025


Average wins by position in AL East:  94.1 91.7 87.8 79.9 74.4
AL East           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Blue Jays         86   62   .566   93.6   68.4   70.03400   29.95300   99.98700         .00550    .03260
Yankees           83   65   .612   92.1   69.9   29.07640   70.76900   99.84540         .10280    .16560
Red Sox           81   68   .557   87.8   74.2     .88960   81.33700   82.22660       -8.74590 -13.17790
Rays              73   75   .531   79.9   82.1     .00000     .07710     .07710         .02120 -10.39620
Orioles           69   79   .440   74.5   87.5     .00000     .00000     .00000         .00000  -0.00120

Average wins by position in AL Central:  91.2 83.3 80.1 71.0 62.6
AL Central        W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Tigers            84   65   .537   91.2   70.8   99.38480     .29570   99.68050       -0.19971  -0.22920
Guardians         77   71   .446   83.2   78.8     .61490    4.66450    5.27940         .38410   2.70980
Royals            74   75   .493   80.3   81.7     .00030     .07180     .07210       -0.23660 -18.19300
Twins             65   83   .455   71.0   91.0     .00000     .00000     .00000         .00000    .00000
White Sox         57   92   .425   62.6   99.4     .00000     .00000     .00000         .00000    .00000

Average wins by position in AL west:  89.4 87.5 85.6 76.0 74.0
AL West           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Astros            81   68   .513   87.7   74.3   30.63070   44.36070   74.99140        3.35120  -3.96350
Mariners          81   68   .535   88.5   73.5   58.07860   31.53900   89.61760         .37730  31.60910
Rangers           79   70   .541   86.3   75.7   11.29070   36.93220   48.22290        4.94010  11.46610
Angels            69   80   .420   74.8   87.2     .00000     .00000     .00000         .00000  -0.01980
Athletics         69   80   .480   75.2   86.8     .00000     .00000     .00000         .00000  -0.00240

Average wins by AL Wild Card:  91.7 88.5 88.4

Average wins by position in NL East:  96.7 83.3 75.9 72.3 66.9
NL East           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Phillies          89   60   .581   96.7   65.3  100.00000     .00000  100.00000         .00000    .01760
Mets              76   73   .554   83.3   78.7     .00000   55.51080   55.51080       -0.53710 -34.12370
Marlins           70   79   .458   75.8   86.2     .00000     .01620     .01620         .01280    .01360
Braves            65   83   .471   72.3   89.7     .00000     .00000     .00000         .00000  -0.00230
Nationals         61   87   .400   67.0   95.0     .00000     .00000     .00000         .00000    .00000

Average wins by position in NL Central:  98.9 92.0 80.9 77.2 71.1
NL Central        W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Brewers           91   58   .585   98.9   63.1   99.57360     .42640  100.00000         .00000    .00000
Cubs              84   64   .573   92.0   70.0     .42640   99.57050   99.99690         .00060    .04601
Reds              74   74   .499   80.7   81.3     .00000    8.09860    8.09860       -1.32000   6.66200
Cardinals         72   77   .459   77.4   84.6     .00000     .24710     .24710       -0.01540    .02490
Pirates           65   84   .470   71.1   90.9     .00000     .00000     .00000         .00000  -0.00010

Average wins by position in NL West:  90.6 87.8 82.8 79.9 45.1
NL West           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Dodgers           83   65   .552   90.4   71.6   80.56170   19.39920   99.96090         .23120   2.95400
Padres            81   68   .541   88.0   74.0   19.24900   79.92680   99.17580        1.33559   4.81760
Giants            75   73   .500   82.4   79.6     .18690   31.82840   32.01530       -2.44930  17.04100
Diamondbacks      74   75   .506   80.3   81.7     .00240    4.97600    4.97840        2.74160   2.54940
Rockies           41  108   .299   45.1  116.9     .00000     .00000     .00000         .00000    .00000

Average wins by NL Wild Card:  92.1 87.8 83.7

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) for each team starts with their W3 and L3 from the Adjusted Standings. A regression is applied to derive the EWP for the rest of the season, which is going to be between the current winning percentage and .500. To allow for uncertainty in the EWP, a normal distribution centered on the EWP is randomly sampled, and that value is used for the remainder of the season in that iteration. 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.