|About the stats|
Over the course of his career, Stan Musial made 12,721 plate appearances. Musial was worth 128.7 Wins Above Replacement and 81.8 Wins Above Average.
After adjusting for length of schedule, catchers, and relief pitchers, the 128.7 WAR becomes 131.1 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 81.8 WAA becomes 83.3 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Musial 281.0 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).
Stan Musial has a Hall Rating of 263, 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.