For pitchers there’s a new table in the splits section, Pitch Types, which shows the percentage of pitches each pitcher throws on any particular count. Here’s what the MLB averages looked like in 2009:
As you might have suspected, as the count gets more in favor of the pitcher, out come the breaking pitches. And typically, the more behind the pitcher gets in the count, the more fastballs are thrown.
David Appelman is the creator of FanGraphs.