This is the leaderboard. It actually shows up under “Pitch Value,” and not “Run Value,” but I prefer “Run Value.” For the sake of being most accurate, it might be filed under “Pitch Run Value,” but now that’s too many words. Don’t worry about it. Let’s move ahead.
I feel like we don’t use these numbers enough. What they show, for hitters: how many runs above or below average a given hitter has been against the various pitch types. We don’t use the numbers much because we don’t understand them very well, and because maybe they don’t stabilize very quickly, but the results aren’t all random. I went ahead and did some exploring, and I’ve pulled some nuggets of interest below. This way, all of us can learn together!
My pool of players: players who batted in 2015, and who have also batted at least 750 times since 2002. Why 750? Because 750 is what I used. The exploration I did grouped everything into two columns. I looked at performance against hard pitches, those being fastballs and cutters. And I looked at performance against everything else, those pitches being sliders, curveballs, changeups, splitters, and knuckleballs. These are the “softer” pitches. For hard and soft, I calculated run values per 100 pitches. Off we go!
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