|About the stats|
Over the course of his career, Roy Roberts pitched 550 innings and made 239 plate appearances. Roberts was worth 3.3 Wins Above Replacement (3.6 as a pitcher and -0.5 as a hitter) and -1.6 Wins Above Average (-1.0 as a pitcher and -0.6 as a hitter).
After adjusting for length of schedule, catchers, and relief pitchers, the 3.3 WAR becomes 2.9 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 -1.6 WAA becomes 2.8 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Roberts 7.9 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).
Roy Roberts has a Hall Rating of 7, leaving him nowhere close to induction to the Hall of Stats.
Want even more detail about the formula? See the About page.