Postseason Odds

Playing the rest of the season a million times

by Clay Davenport

See the Forecast-adjusted version of this report.

Generated Thu Sep 18 07:54:54 AM EDT 2025


Average wins by position in AL East:  94.6 91.7 88.1 79.1 75.7
AL East           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Blue Jays         89   63   .568   94.5   67.5   88.63180   11.36820  100.00000         .00000    .11800
Yankees           85   67   .606   91.7   70.3   11.03870   88.89940   99.93810         .08691    .78410
Red Sox           83   69   .559   88.1   73.9     .32950   89.49100   89.82050        3.79180  -5.87540
Rays              74   78   .536   79.0   83.0     .00000     .00010     .00010       -0.00050  -0.68790
Orioles           72   80   .443   75.8   86.2     .00000     .00000     .00000         .00000    .00000

Average wins by position in AL Central:  90.3 84.9 80.9 70.3 60.6
AL Central        W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Tigers            85   67   .534   90.3   71.7   97.50560    1.23610   98.74170       -0.72570  -1.23860
Guardians         80   71   .451   84.9   77.1    2.49400   12.26560   14.75960        3.82850  11.51580
Royals            76   76   .491   80.9   81.1     .00040     .02420     .02460       -0.00030  -2.46350
Twins             66   86   .457   70.3   91.7     .00000     .00000     .00000         .00000    .00000
White Sox         57   96   .417   60.6  101.4     .00000     .00000     .00000         .00000    .00000

Average wins by position in AL west:  89.8 87.8 84.4 76.1 73.6
AL West           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Astros            84   69   .510   88.7   73.3   40.03500   54.39250   94.42750        4.79350  18.74020
Mariners          83   69   .540   88.8   73.2   59.85610   35.45430   95.31040       -2.21030  10.63150
Rangers           79   74   .543   84.4   77.6     .10890    6.86860    6.97750       -9.56390 -31.52310
Athletics         71   81   .481   75.9   86.1     .00000     .00000     .00000         .00000    .00000
Angels            69   83   .413   73.7   88.3     .00000     .00000     .00000         .00000  -0.00110

Average wins by AL Wild Card:  91.7 88.7 88.7

Average wins by position in NL East:  96.5 83.6 76.5 74.5 65.6
NL East           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Phillies          91   62   .576   96.5   65.5  100.00000     .00000  100.00000         .00000    .00000
Mets              78   74   .554   83.6   78.4     .00000   75.17780   75.17780       -7.64830   2.81800
Marlins           72   80   .456   76.1   85.9     .00000     .00750     .00750         .00430    .00710
Braves            70   83   .482   74.8   87.2     .00000     .00000     .00000         .00000    .00000
Nationals         62   91   .389   65.6   96.4     .00000     .00000     .00000         .00000    .00000

Average wins by position in NL Central:  98.9 93.8 80.7 77.5 69.1
NL Central        W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Brewers           93   59   .590   98.9   63.1   98.79880    1.20120  100.00000         .00000    .00000
Cubs              88   64   .579   93.8   68.2    1.20120   98.79880  100.00000         .00000    .02530
Reds              76   76   .498   80.7   81.3     .00000    5.67530    5.67530        3.20800  -4.13480
Cardinals         74   79   .459   77.5   84.5     .00000     .05250     .05250       -0.06560  -0.20320
Pirates           65   88   .461   69.1   92.9     .00000     .00000     .00000         .00000    .00000

Average wins by position in NL West:  90.6 88.1 82.2 80.5 44.1
NL West           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Dodgers           85   67   .562   90.4   71.6   81.39950   18.59890   99.99840         .01220    .35650
Padres            83   69   .539   88.3   73.7   18.59760   81.27160   99.86920         .61100   1.89170
Diamondbacks      77   76   .517   81.2   80.8     .00000    6.99300    6.99300       -2.86160   4.57230
Giants            76   76   .491   81.5   80.5     .00290   12.22340   12.22630        6.74000  -5.33290
Rockies           41  111   .298   44.1  117.9     .00000     .00000     .00000         .00000    .00000

Average wins by NL Wild Card:  93.8 88.1 83.6

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.