|About the stats|
Over the course of his career, Rickey Henderson made 13,346 plate appearances. Henderson was worth 111.1 Wins Above Replacement and 69.0 Wins Above Average.
After adjusting for length of schedule, catchers, and relief pitchers, the 111.1 WAR becomes 113.7 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 69.0 WAA becomes 74.2 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Henderson 247.3 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).
Rickey Henderson has a Hall Rating of 232, 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.