Postseason Odds

Playing the rest of the season a million times

by Clay Davenport

See the Forecast-adjusted version of this report.

Generated Sat Jul 5 07:52:16 AM EDT 2025


Average wins by position in AL East:  95.0 90.1 86.2 81.3 68.3
AL East           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Blue Jays         50   38   .519   88.1   73.9   18.14610   58.92570   77.07180       -0.08960  15.05220
Rays              48   40   .548   88.1   73.9   18.21220   58.51520   76.72740       -4.90020 -11.17480
Yankees           48   40   .612   93.1   68.9   59.90390   35.19540   95.09930       -1.29520  -3.65760
Red Sox           44   45   .543   83.2   78.8    3.73580   35.71430   39.45010        4.43320  15.62380
Orioles           38   49   .416   68.4   93.6     .00200     .14970     .15170         .01890  -0.09520

Average wins by position in AL Central:  96.5 82.1 77.3 72.2 58.0
AL Central        W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Tigers            55   34   .561   96.5   65.5   98.02150    1.25310   99.27460       -0.01400   1.24689
Twins             42   46   .486   78.6   83.4     .96170   11.97500   12.93670        2.50070 -13.99540
Royals            42   47   .490   78.7   83.3     .86970   11.45830   12.32800        2.15820  -2.30150
Guardians         40   46   .436   74.3   87.7     .14710    2.77800    2.92510       -0.80050  -7.26590
White Sox         29   59   .393   58.1  103.9     .00000     .00000     .00000         .00000    .00000

Average wins by position in AL west:  94.8 86.3 81.0 74.5 66.3
AL West           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Astros            53   35   .549   94.4   67.6   85.45730   11.47130   96.92860        2.34940    .74039
Mariners          46   42   .521   85.0   77.0   10.63110   43.95690   54.58800        4.46570   9.63950
Angels            43   44   .427   74.9   87.1     .24010    3.38040    3.62050       -1.01400    .34570
Rangers           43   45   .522   81.7   80.3    3.66970   25.17010   28.83980       -7.83230  -4.19950
Athletics         37   53   .416   66.9   95.1     .00180     .05660     .05840         .01970    .04140

Average wins by AL Wild Card:  90.8 87.8 87.6

Average wins by position in NL East:  94.2 88.4 78.2 72.5 66.4
NL East           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Phillies          51   37   .538   90.9   71.1   48.91060   35.22220   84.13280       -1.60070   8.24210
Mets              51   38   .555   91.5   70.5   50.53760   35.92710   86.46470        2.98490  -1.25460
Marlins           39   47   .456   73.1   88.9     .09760     .74810     .84570       -0.21530    .61070
Braves            39   48   .503   76.5   85.5     .45170    2.85690    3.30860       -1.55040  -3.15220
Nationals         37   51   .426   67.7   94.3     .00250     .02760     .03010       -0.03530  -0.00800

Average wins by position in NL Central:  97.1 89.3 85.1 81.0 74.6
NL Central        W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Cubs              53   35   .588   96.6   65.4   84.42490   13.30330   97.72820        1.42960   8.18660
Brewers           49   39   .522   86.7   75.3    8.14600   46.90260   55.04860        5.62500   7.75750
Cardinals         47   42   .525   85.3   76.7    5.03880   38.88200   43.92080       -6.61610  -7.12640
Reds              46   42   .510   83.1   78.9    2.33170   25.21150   27.54320        4.18630  -2.82610
Pirates           38   51   .509   75.5   86.5     .05860    1.95940    2.01800       -0.65460   1.59420

Average wins by position in NL West:  96.2 88.4 83.7 78.8 46.0
NL West           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Dodgers           56   33   .541   95.6   66.4   84.29630   12.45420   96.75050       -1.26770   1.70050
Padres            47   40   .517   86.6   75.4   10.25190   44.71400   54.96590        7.64750  10.60860
Giants            47   42   .498   83.3   78.7    3.84620   25.01490   28.86110       -4.78870 -13.30930
Diamondbacks      43   45   .518   81.5   80.5    1.60560   16.77620   18.38180       -5.14450 -11.02360
Rockies           20   68   .354   46.0  116.0     .00000     .00000     .00000         .00000    .00000

Average wins by NL Wild Card:  91.8 89.0 86.6

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.