|About the stats|
Over the course of his career, Hisashi Iwakuma pitched 883 innings and made 15 plate appearances. Iwakuma was worth 16.9 Wins Above Replacement (17.0 as a pitcher and -0.1 as a hitter) and 8.9 Wins Above Average (9.0 as a pitcher and -0.1 as a hitter).
After adjusting for length of schedule, catchers, and relief pitchers, the 16.9 WAR becomes 17.1 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 8.9 WAA becomes 9.1 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Iwakuma 33.5 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).
Hisashi Iwakuma has a Hall Rating of 31, leaving him nowhere close to induction to the Hall of Stats when eligible.
Want even more detail about the formula? See the About page.