|About the stats|
Over the course of his career, George Brett made 11,625 plate appearances. Brett was worth 88.6 Wins Above Replacement and 50.5 Wins Above Average.
After adjusting for length of schedule, catchers, and relief pitchers, the 88.6 WAR becomes 89.6 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 50.5 WAA becomes 56.9 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Brett 192.0 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).
George Brett has a Hall Rating of 180, 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.