|About the stats|
Over the course of his career, Warren Spahn pitched 5,243 innings and made 2,056 plate appearances. Spahn was worth 100.3 Wins Above Replacement (92.5 as a pitcher and 7.6 as a hitter) and 48.6 Wins Above Average (41.0 as a pitcher and 7.5 as a hitter).
After adjusting for length of schedule, catchers, and relief pitchers, the 100.3 WAR becomes 101.7 adjWAR. Then, WAA is adjusted by ignoring negative seasons (thus, truly capturing a player’s peak seasons) and making similar adjustments for catchers and relief pitchers. After these adjustments, the 48.6 WAA becomes 47.4 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Spahn 187.0 wWAR. wWAR is then converted to Hall Rating. A Hall Rating of 100 represents the Hall of Stats borderline (similar to OPS+ or wRC+, where 100 represents league average).
Warren Spahn has a Hall Rating of 176, making him a member of the Hall of Stats.
Want even more detail about the formula? See the About page.