|About the stats|
Over the course of his career, Charlie Sprague made 239 plate appearances and pitched 161 innings. Sprague was worth -0.9 Wins Above Replacement (-0.8 as a hitter and -0.2 as a pitcher) and -2.3 Wins Above Average (-1.2 as a hitter and -1.1 as a pitcher).
After adjusting for length of schedule, catchers, and relief pitchers, the -0.9 WAR becomes -0.9 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 -2.3 WAA becomes 0.1 adjWAA.
Then, the adjWAR and adjWAA are combined, but with extra weighting given to adjWAA. This gives Sprague -0.8 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).
Charlie Sprague has a Hall Rating of -1, leaving him nowhere close to induction to the Hall of Stats.
Want even more detail about the formula? See the About page.