How good are these forecasts?

Every forecast scored on seasons the model never saw while its settings were chosen.

Held-back seasons

ForecastForecastsLog lossFavourite won
The model73490.68156%
Base rate73490.69153%
Recent form73490.69053%

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The postseason odds play the real format: three division winners and three wild cards per league, byes for the top two, and best-of-three, five and seven series.

The starter figure is runs allowed with him on the mound, which includes his defence and bullpen; it is not a pitching-only measure like FIP.

Lineups, rest and bullpen use are not in the model.

Ballparks with a roof get no weather, because whether it was closed isn't recorded.