|About the stats|
Over the course of his career, Jason Giambi made 8,908 plate appearances. Giambi was worth 50.8 Wins Above Replacement and 19.6 Wins Above Average.
After adjusting for length of schedule, catchers, and relief pitchers, the 50.8 WAR becomes 50.8 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 19.6 WAA becomes 27.3 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Giambi 99.9 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).
Jason Giambi has a Hall Rating of 94, making him close to the Hall of Stats borderline—but still on the outside.
Want even more detail about the formula? See the About page.