|About the stats|
Over the course of his career, Eddie Mathews made 10,101 plate appearances. Mathews was worth 96.5 Wins Above Replacement and 58.5 Wins Above Average.
After adjusting for length of schedule, catchers, and relief pitchers, the 96.5 WAR becomes 97.5 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 58.5 WAA becomes 59.0 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Mathews 203.7 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).
Eddie Mathews has a Hall Rating of 191, making him not only a member of the Hall of Stats—but one of the very best players of all time.
Want even more detail about the formula? See the About page.