|About the stats|
Over the course of his career, Frank Mountain pitched 1,215 innings and made 761 plate appearances. Mountain was worth 1.9 Wins Above Replacement (0.7 as a pitcher and 1.4 as a hitter) and -5.0 Wins Above Average (-5.9 as a pitcher and 0.9 as a hitter).
After adjusting for length of schedule, catchers, and relief pitchers, the 1.9 WAR becomes 2.5 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 -5.0 WAA becomes 2.5 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Mountain 7.0 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).
Frank Mountain has a Hall Rating of 7, leaving him nowhere close to induction to the Hall of Stats.
Want even more detail about the formula? See the About page.