|About the stats|
Over the course of his career, Henry Aaron made 13,941 plate appearances. Aaron was worth 143.1 Wins Above Replacement and 92.8 Wins Above Average.
After adjusting for length of schedule, catchers, and relief pitchers, the 143.1 WAR becomes 144.3 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 92.8 WAA becomes 95.8 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Aaron 316.7 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).
Henry Aaron has a Hall Rating of 297, 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.