|About the stats|
Over the course of his career, Jeff Niemann pitched 544 innings and made 14 plate appearances. Niemann was worth 4.2 Wins Above Replacement (4.4 as a pitcher and -0.1 as a hitter) and -1.0 Wins Above Average (-0.9 as a pitcher and -0.1 as a hitter).
After adjusting for length of schedule, catchers, and relief pitchers, the 4.2 WAR becomes 4.2 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 -1.0 WAA becomes 0.9 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Niemann 5.8 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).
Jeff Niemann has a Hall Rating of 5, leaving him nowhere close to induction to the Hall of Stats.
Want even more detail about the formula? See the About page.