|About the stats|
Over the course of his career, John Shaffer pitched 181 innings and made 78 plate appearances. Shaffer was worth 0.4 Wins Above Replacement (0.5 as a pitcher and -0.1 as a hitter) and -0.4 Wins Above Average (-0.4 as a pitcher and -0.1 as a hitter).
After adjusting for length of schedule, catchers, and relief pitchers, the 0.4 WAR becomes 0.3 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 -0.4 WAA becomes 1.2 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Shaffer 2.5 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).
John Shaffer has a Hall Rating of 2, leaving him nowhere close to induction to the Hall of Stats.
Want even more detail about the formula? See the About page.