Over the course of his career,
Mike Piazza
made 7,745 plate appearances.
Piazza was worth 56.1 Wins Above Replacement
and 35.9 Wins Above Average.
After adjusting for length of schedule, catchers, and relief pitchers, the 56.1 WAR becomes
67.9 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 35.9 WAA becomes 47.4 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA.
This gives Piazza 148.0 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).
Mike Piazza has a Hall Rating of 146,
making him a member of the Hall of Stats.
Want even more detail about the formula? See the
About page.
