|About the stats|
Over the course of his career, David Wells pitched 3,439 innings and made 200 plate appearances. Wells was worth 53.5 Wins Above Replacement (53.6 as a pitcher and -0.2 as a hitter) and 21.9 Wins Above Average (22.0 as a pitcher and -0.2 as a hitter).
After adjusting for length of schedule, catchers, and relief pitchers, the 53.5 WAR becomes 56.0 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 21.9 WAA becomes 28.0 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Wells 106.4 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).
David Wells has a Hall Rating of 100, making him close to the Hall of Stats borderline—but still on the outside.
Want even more detail about the formula? See the About page.