|About the stats|
Over the course of his career, Henry Keupper pitched 213 innings and made 77 plate appearances. Keupper was worth -0.5 Wins Above Replacement (-0.9 as a pitcher and 0.4 as a hitter) and -1.3 Wins Above Average (-1.7 as a pitcher and 0.4 as a hitter).
After adjusting for length of schedule, catchers, and relief pitchers, the -0.5 WAR becomes -0.5 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 -1.3 WAA becomes 0.0 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Keupper -0.5 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).
Henry Keupper has a Hall Rating of 0, leaving him nowhere close to induction to the Hall of Stats.
Want even more detail about the formula? See the About page.