|About the stats|
Over the course of his career, Mike Proly pitched 545 innings and made 41 plate appearances. Proly was worth 8.5 Wins Above Replacement (8.5 as a pitcher and 0.1 as a hitter) and 3.9 Wins Above Average (3.7 as a pitcher and 0.1 as a hitter).
After adjusting for length of schedule, catchers, and relief pitchers, the 8.5 WAR becomes 10.3 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 3.9 WAA becomes 4.6 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Proly 18.6 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).
Mike Proly has a Hall Rating of 17, leaving him nowhere close to induction to the Hall of Stats.
Want even more detail about the formula? See the About page.