|About the stats|
Over the course of his career, Roy Oswalt pitched 2,245 innings and made 796 plate appearances. Oswalt was worth 50.0 Wins Above Replacement (49.9 as a pitcher and 0.1 as a hitter) and 32.2 Wins Above Average (32.3 as a pitcher and 0.1 as a hitter).
After adjusting for length of schedule, catchers, and relief pitchers, the 50.0 WAR becomes 50.3 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 32.2 WAA becomes 34.6 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Oswalt 112.6 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).
Roy Oswalt has a Hall Rating of 105, making him a member of the Hall of Stats—but one who sits very close to the borderline.
Want even more detail about the formula? See the About page.