|About the stats|
Over the course of his career, Terry Mulholland pitched 2,575 innings and made 687 plate appearances. Mulholland was worth 11.2 Wins Above Replacement (12.9 as a pitcher and -1.8 as a hitter) and -10.6 Wins Above Average (-8.8 as a pitcher and -1.8 as a hitter).
After adjusting for length of schedule, catchers, and relief pitchers, the 11.2 WAR becomes 10.7 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 -10.6 WAA becomes 6.9 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Mulholland 23.1 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).
Terry Mulholland has a Hall Rating of 22, leaving him nowhere close to induction to the Hall of Stats.
Want even more detail about the formula? See the About page.