Thursday, September 11, 2008
Mixing speeds
You can mix pitch breaks (direction: straight, north/south, east/west, NE/SW, etc; and amount), you can mix pitch locations (in, out, up, down), and you can mix pitch speeds. But as Dave shows, some pitchers mix pitch speeds better than others.
It is possible that he is giving up mixing pitch speeds with much better mixing of location and break, though it’s hard to believe a young starter can get a handle on that. I suppose this is what two-pitch relievers do. One-pitch relievers like Mariano obviously rely one only two of these three timing parameters.
Anyway, nice and simple graph. I like these kind of time-progression charts that Dan Brooks also does. I’d like to think that each team should have one guy on staff who is entirely dedicated to doing nothing but analyzing this data, for the direct benefit of the pitcher.
This seems like the worst kind of pseudo-analysis to me. You plot a graph and draw a conclusion on conjecture with absolutely no research to back it up. First of all Feireabend didn’t pitch all that much worse than Washburn. He allowed 5 hits and 3 walks in 7 innings, Washburn 3 hits and 4 walks in 6.2 innings. The only significant difference was that 2 of the hits Feireabend allowed were bases empty homers. Second, there is no evidence that mixing speeds within pitches is a good thing. It may be good, bad, or not important one way or the other, but we would never no it from what is presented in the article except for the author claims that it is a good thing.
I give a little leeway to the newspaper sportswriter that is under obligation to publish a column everyday. Somedays he has nothing and so he is just going to write fluff because he has space he has to fill. But there is no excuse for fluff in blog writing. Wait until you have done the research and have something real to report.