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Miller: The blind BABIP test

From Sam Miller at Baseball Prospectus on July 6, 2012:

If we want to evaluate a pitch, there are few things we can focus on. We can look at the qualities of the pitch itself as it moves toward home plate, including movement, pitch type, and location. We can look at the catcher's glove, to see how much it moves from its target. We can look at the batter, to see how balanced he is as he swings at it. And we can look at the result: hit, out, stung, dribbled. I have a theory, which is that we (non-scouts) are mostly unable to make much of the first, second and third ways. That, mostly, we only remember the fourth. 

So what follows is an experiment. I don't know what the point of this experiment is or what it will show. I don't know the best way to conduct this experiment. This might be an experiment I revisit in a better form someday in the future. But the experiment is simple, and I think it will be interesting, and I can't wait.

Last week, Jake Peavy started a game against the Twins. It was a kind of a classic BABIP-buster game. He struck out seven and walked one; he didn't allow a home run. But he gave up 10 hits and three runs, and he took the loss. Twins batters put 20 balls in play, and 10 became hits. This raises the question of whether BABIP failed Peavy, or whether Peavy failed BABIP, and whether these hits were his fault. So I've created GIFs of these 20 pitches. One was a bunt, and one had bad camera work, so 18 GIFs. Nine hits, nine outs. The twist is that you get to see only up to the frame just before the ball is hit, which means the ball is, at the very most, within eight feet of the batter. You don't get to see the result. You get to see three of the four pieces of evidence, but not the fourth. (I'll also give you the count, and a description of the previous pitch, so you'll have a sliver of sequencing information.) Can you identify the hits?

Read the full article here: http://www.baseballprospectus.com/article.php?articleid=17535

This page was last updated July 6, 2012 at 1:57 pm MST.

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