|About the stats|
Over the course of his career, Rogers Hornsby made 9,481 plate appearances. Hornsby was worth 127.5 Wins Above Replacement and 97.4 Wins Above Average.
After adjusting for length of schedule, catchers, and relief pitchers, the 127.5 WAR becomes 131.7 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 97.4 WAA becomes 98.4 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Hornsby 308.8 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).
Rogers Hornsby has a Hall Rating of 289, 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.