|About the stats|
So far in his career, Aroldis Chapman has pitched 640 innings and made 2 plate appearances. Chapman has been worth 19.0 Wins Above Replacement (19.0 as a pitcher and 0.0 as a hitter) and 10.6 Wins Above Average (10.6 as a pitcher and 0.0 as a hitter).
After adjusting for length of schedule, catchers, and relief pitchers, the 19.0 WAR becomes 23.5 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 10.6 WAA becomes 13.3 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Chapman 47.4 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).
Aroldis Chapman has a Hall Rating of 45, meaning he would not be in the Hall of Stats if his career ended today.
Want even more detail about the formula? See the About page.