developed by George William “Bill” James, a “game score” is a metric which establishes a pitcher’s strength within a particular game. A pitcher’s strength is measured by first starting with 50 points. For additions: A points is added for each recorded out, which means three points for every complete inning pitched. Two points are added for each inning completed after the fourth. For each strikeout, add one point. Now, for subtractions: Four points are subtracted for each earned run allowed. One point is subtracted for each walk. Two points are subtracted for each hit allowed. Two points are subtracted for each unearned run allowed.