from Amazon
Friday, August 26, 2011
Reduce speed, improve command
Great little study, using COMMANDf/x:
It appears there is not much difference in command between zero-strike and one-strike counts, despite the quarter-mph difference in velocity. At two strikes, though, pitchers seem to throw about half a mile harder than average, while losing around an inch of command.
I was more shocked by the table showing the Verlander misses his catcher’s mitt, on his fastball, by 17.4 inches… on average, which is league worst. The average pitcher misses his catcher’s mitt by 13 inches, and the best pitcher is at 9.2 inches.
I’m not buying it. At all.
The second chart shows standard deviations, and Verlander again at the bottom at 11.8 inches (and league average of 7.4).
I think there’s a math error somewhere. Almost always, the average absolute error is smaller than the standard deviation. I think the author has all the absolute error numbers as 2x too high.
Even then, I’m finding it hard to believe that Verlander is off by one SD = 11.8 inches on his fastball. If that is what it is showing, then I have to question the using of a catcher’s mitt as a proxy for pitcher intent. I’d like to see someone look at Verlander, pitch by pitch, and show us how he really missed where he wanted to throw.
Or is the catcher simply always setting himself up in the exact same spot?
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