Statistical research in baseball: Freeze frame | The Economist

Clearly, most of the low-hanging statistical fruit was picked a long time ago. But the “long live Moneyball” camp got quite a boost this week with the publication of a stunning new study by BP’s Mike Fast on “framing”: the catcher’s influence on whether the umpire calls a pitch a ball or a strike. If umpires were perfect, or replaced with computers, the catcher would have no effect—what matters is where a pitch crosses home plate, not where it hits the mitt. In fact, however, umpires are human, and Mr Fast shows they can be duped by skillful catchers far more than most fans would ever have thought possible.

A closer look at the Baseball Prospectus study by Mike Fast on catching.

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