Postseason Odds

Playing the rest of the season a million times

by Clay Davenport

See the Forecast-adjusted version of this report.

Generated Tue Oct 1 07:51:46 AM EDT 2024


Average wins by position in AL East:  94.0 91.0 81.0 80.0 74.0
AL East           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Yankees           94   68   .575   94.0   68.0  100.00000     .00000  100.00000         .00000    .00000
Orioles           91   71   .566   91.0   71.0     .00000  100.00000  100.00000         .00000    .13330
Red Sox           81   81   .545   81.0   81.0     .00000     .00000     .00000         .00000  -0.37640
Rays              80   82   .490   80.0   82.0     .00000     .00000     .00000         .00000  -0.10460
Blue Jays         74   88   .484   74.0   88.0     .00000     .00000     .00000         .00000    .00000

Average wins by position in AL Central:  92.0 86.0 86.0 82.0 41.0
AL Central        W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Guardians         92   69   .505   92.0   69.0  100.00000     .00000  100.00000         .00000    .00000
Royals            86   76   .522   86.0   76.0     .00000  100.00000  100.00000         .00000  48.07960
Tigers            86   76   .516   86.0   76.0     .00000  100.00000  100.00000         .00000  20.87670
Twins             82   80   .516   82.0   80.0     .00000     .00000     .00000         .00000 -54.84770
White Sox         41  121   .320   41.0  121.0     .00000     .00000     .00000         .00000    .00000

Average wins by position in AL west:  88.0 85.0 78.0 69.0 63.0
AL West           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Astros            88   73   .547   88.0   73.0  100.00000     .00000  100.00000         .00000   1.73960
Mariners          85   77   .565   85.0   77.0     .00000     .00000     .00000         .00000 -15.50050
Rangers           78   84   .448   78.0   84.0     .00000     .00000     .00000         .00000    .00000
Athletics         69   93   .442   69.0   93.0     .00000     .00000     .00000         .00000    .00000
Angels            63   99   .413   63.0   99.0     .00000     .00000     .00000         .00000    .00000

Average wins by AL Wild Card:  91.0 86.0 85.7

Average wins by position in NL East:  95.0 89.0 89.0 71.0 62.0
NL East           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Phillies          95   67   .562   95.0   67.0  100.00000     .00000  100.00000         .00000    .00000
Braves            89   73   .555   89.0   73.0     .00000  100.00000  100.00000       20.99620  56.52130
Mets              89   73   .547   89.0   73.0     .00000  100.00000  100.00000       29.80500  22.06860
Nationals         71   91   .458   71.0   91.0     .00000     .00000     .00000         .00000    .00000
Marlins           62  100   .399   62.0  100.0     .00000     .00000     .00000         .00000    .00000

Average wins by position in NL Central:  93.0 83.0 83.0 77.0 76.0
NL Central        W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Brewers           93   69   .555   93.0   69.0  100.00000     .00000  100.00000         .00000    .00000
Cardinals         83   79   .486   83.0   79.0     .00000     .00000     .00000         .00000    .00000
Cubs              83   79   .527   83.0   79.0     .00000     .00000     .00000         .00000    .00000
Reds              77   85   .484   77.0   85.0     .00000     .00000     .00000         .00000    .00000
Pirates           76   86   .437   76.0   86.0     .00000     .00000     .00000         .00000    .00000

Average wins by position in NL West:  98.0 93.0 89.0 80.0 61.0
NL West           W    L    Pct3  Avg W  Avg L  Champions  Wild Card   Playoffs      1D Change 7D Change
Dodgers           98   64   .596   98.0   64.0  100.00000     .00000  100.00000         .00000    .00000
Padres            93   69   .564   93.0   69.0     .00000  100.00000  100.00000         .00000    .00360
Diamondbacks      89   73   .533   89.0   73.0     .00000     .00000     .00000      -50.80120 -78.59350
Giants            80   82   .483   80.0   82.0     .00000     .00000     .00000         .00000    .00000
Rockies           61  101   .361   61.0  101.0     .00000     .00000     .00000         .00000    .00000

Average wins by NL Wild Card:  93.0 89.0 88.8

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.