|About the stats|
Over the course of his career, Bill Stemmyer pitched 495 innings and made 230 plate appearances. Stemmyer was worth 1.3 Wins Above Replacement (0.1 as a pitcher and 1.2 as a hitter) and -2.7 Wins Above Average (-3.9 as a pitcher and 1.2 as a hitter).
After adjusting for length of schedule, catchers, and relief pitchers, the 1.3 WAR becomes 1.5 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 -2.7 WAA becomes 0.0 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Stemmyer 1.5 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).
Bill Stemmyer has a Hall Rating of 1, leaving him nowhere close to induction to the Hall of Stats.
Want even more detail about the formula? See the About page.