|About the stats|
Over the course of his career, Don McMahon pitched 1,310 innings and made 185 plate appearances. McMahon was worth 22.8 Wins Above Replacement (22.6 as a pitcher and -0.1 as a hitter) and 10.7 Wins Above Average (10.8 as a pitcher and -0.1 as a hitter).
After adjusting for length of schedule, catchers, and relief pitchers, the 22.8 WAR becomes 27.0 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 10.7 WAA becomes 16.7 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives McMahon 57.1 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).
Don McMahon has a Hall Rating of 53, leaving him nowhere close to induction to the Hall of Stats.
Want even more detail about the formula? See the About page.