Pitch Framing - Is it Real?

Posted by Dan Turkenkopf - 05/04/08 at 01:04:00 pm

My latest post at Beyond the Box Score looks into whether certain catchers do better than others in convincing the umpire to call close pitches strikes and how many runs might be saved by turning balls into strikes.  The results shocked me, and even cause me to question the outcome.  Check it out and let me know what I did wrong.

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  1. Having read your article over there, my first thought is that certain catchers tend to catch certain pitchers, and that might artificially have an effect on their ability to get strike calls. For instance, Tim McCarver always caught Steve Carlton, but rarely anyone else. Another example is Eddie Perez always catching Greg Maddux in the late-90’s, but rarely anyone else.

    Comment by Tom G, ballssticksstuff.com — April 6, 2008 #

  2. Thanks Tom.

    I think that might have an effect if we were looking at more data, but I don’t think any catchers could make the sample requirements (about 13 games in PITCH f/x parks) while predominantly catching one pitcher.

    I do think it’s likely there’s a pitching staff component to this, but I don’t know if it’s possible to tease out from the partial year of data we have to this point.

    Comment by Dan Turkenkopf — April 7, 2008 #

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