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 Thu Apr 25 07:52:32 AM EDT 2024


Average wins by position in AL East:  96.8 91.0 86.8 82.7 77.3
AL East           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs
Yankees           17    8   .554   92.8   69.2   47.26050   39.05540   86.31590
Orioles           16    8   .533   88.6   73.4   23.28160   46.20130   69.48290
Red Sox           14   11   .511   83.0   79.0    7.02670   31.65240   38.67910
Blue Jays         13   12   .535   86.2   75.8   13.87930   43.20660   57.08590
Rays              13   13   .530   84.0   78.0    8.55190   36.01000   44.56190

Average wins by position in AL Central:  88.7 82.7 77.9 72.3 58.1
AL Central        W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs
Guardians         17    7   .482   84.3   77.7   44.84010    9.66520   54.50530
Royals            15   10   .457   78.0   84.0   14.26900    6.45900   20.72800
Tigers            14   11   .459   77.5   84.5   12.62370    6.12210   18.74580
Twins             10   13   .506   81.6   80.4   28.23740   10.00050   38.23790
White Sox          3   21   .401   58.4  103.6     .02980     .01280     .04260

Average wins by position in AL west:  91.7 85.8 80.9 75.1 64.4
AL West           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs
Rangers           13   12   .527   85.9   76.1   34.90110   22.24550   57.14660
Mariners          12   12   .509   82.2   79.8   18.14450   17.74090   35.88540
Angels            10   15   .493   78.0   84.0    7.47760    9.53000   17.00760
Athletics          9   16   .419   65.2   96.8     .16170     .27560     .43730
Astros             7   18   .573   86.6   75.4   39.31510   21.82270   61.13780

Average wins by AL First Wild Card:  91.8
Average wins by AL Second Wild Card:  88.4
Average wins by AL Third Wild Card:  86.0

Average wins by position in NL East:  99.1 87.6 79.6 71.5 64.1
NL East           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs
Braves            17    6   .579   98.4   63.6   85.34220   12.17020   97.51240
Phillies          15   10   .523   86.2   75.8   11.55980   51.09730   62.65710
Mets              13   11   .485   80.2   81.8    2.93970   26.26510   29.20480
Nationals         10   13   .420   68.2   93.8     .08340    1.59370    1.67710
Marlins            6   20   .459   68.8   93.2     .07490    1.73810    1.81300

Average wins by position in NL Central:  92.4 86.9 82.7 78.6 72.9
NL Central        W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs
Brewers           15    8   .514   86.8   75.2   36.33120   29.21560   65.54680
Cubs              15    9   .508   85.7   76.3   30.12940   29.39060   59.52000
Reds              14   10   .500   82.4   79.6   15.87050   25.04060   40.91110
Pirates           13   12   .471   77.2   84.8    4.89350   12.38450   17.27800
Cardinals         11   14   .510   81.4   80.6   12.77540   22.78740   35.56280

Average wins by position in NL West:  97.9 86.5 80.1 74.1 63.9
NL West           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs
Dodgers           15   11   .605   97.3   64.7   86.73570   10.26050   96.99620
Padres            14   13   .488   79.8   82.2    3.08390   24.00490   27.08880
Diamondbacks      12   14   .529   83.8   78.2    8.76990   40.21040   48.98030
Giants            12   14   .478   76.7   85.3    1.38510   13.40230   14.78740
Rockies            6   19   .433   64.8   97.2     .02540     .43880     .46420

Average wins by NL First Wild Card:  91.1
Average wins by NL Second Wild Card:  87.5
Average wins by NL Third Wild Card:  85.1

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.