|About the stats|
Over the course of his career, Jimmy Callahan made 3,616 plate appearances and pitched 1,603 innings. Callahan was worth 24.8 Wins Above Replacement (9.2 as a hitter and 15.6 as a pitcher) and -0.5 Wins Above Average (-1.9 as a hitter and 1.5 as a pitcher).
After adjusting for length of schedule, catchers, and relief pitchers, the 24.8 WAR becomes 25.3 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 -0.5 WAA becomes 10.7 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Callahan 44.6 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).
Jimmy Callahan has a Hall Rating of 42, leaving him nowhere close to induction to the Hall of Stats.
Want even more detail about the formula? See the About page.