|About the stats|
Over the course of his career, David Aardsma pitched 337 innings and made 5 plate appearances. Aardsma was worth 1.7 Wins Above Replacement (1.8 as a pitcher and -0.1 as a hitter) and -1.2 Wins Above Average (-1.1 as a pitcher and -0.1 as a hitter).
After adjusting for length of schedule, catchers, and relief pitchers, the 1.7 WAR becomes 2.1 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 -1.2 WAA becomes 1.5 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Aardsma 4.7 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).
David Aardsma has a Hall Rating of 4, leaving him nowhere close to induction to the Hall of Stats when eligible.
Want even more detail about the formula? See the About page.