Following Larry’s examination of the best pitches in the Yankees’ rotation, we received an email from a reader who asked an excellent question.
I was wondering if you guys could do some kind of guide to what pitches each of our pitchers throw and how often.
Thanks to FanGraphs, identifying these pitches and frequencies becomes much easier. Previously, to identify a pitcher’s entire arsenal would require quite a bit of video watching, and would likely also require an outside resource. Frequency was out of the question, unless you had a paid subscription to a service such as Baseball Info Solutions. Now FanGraphs aggregates all of that data.
Today we’ll look into what the Yankees’ seven starters throw, and how frequently they throw it. But before we do, a few disclaimers. First, we’re going by Pitch f/x data here, since it’s captured on high-speed cameras. The Baseball Info Solutions data, also available on FanGraphs, gets recorded, from videos, by stringers. There’s much more room for human error there. Also, the Pitch f/x data includes more pitches, so there’s a more accurate breakdown.
At the same time, Pitch f/x isn’t error-free. It often misclassifies pitches, and consistently. For example, before 2010 it didn’t do a good job of separating different types of fastballs. I’ll try to combine personal knowledge of arsenals with the Pitch f/x data in order to provide a clearer look at each pitcher’s repertoire. Remember, too, that you can look into this yourself; the data is available on every FanGraphs player page.