|About the stats|
Over the course of his career, Hugh Duffy made 7,841 plate appearances. Duffy was worth 43.0 Wins Above Replacement and 18.0 Wins Above Average.
After adjusting for length of schedule, catchers, and relief pitchers, the 43.0 WAR becomes 46.7 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 18.0 WAA becomes 19.5 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Duffy 81.5 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).
Hugh Duffy has a Hall Rating of 76, leaving him short of induction to the Hall of Stats.
Want even more detail about the formula? See the About page.