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Thread: Article: Breaking Better

  1. #41
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    Quote Originally Posted by Jim H View Post
    It is only about 2-3 years old. It is based on Pitch F/X. If a pitcher gets a strike called by the umpire on a pitch Pitch F/X called a ball, the catcher gets credit for it because of pitch framing. There are a few things to be nervous about, whether there is as much impact from a few stolen strikes as the creator suggests, the fact that Pitch F/X can't possibly be always right, whether the catcher should be the one to always get the credit, and a number of other things.

    It is an interesting stat, but almost certainly needs refinement, and is certainly not the end all of ways to evaluate catchers.
    Two things I have wondered is if different stadiums lead to different pitch f/x readings, and how much do the pitchers impact umpires calls. The studies claim otherwise, but I have to think bad staffs make catchers look worse.
    Papers...business papers.

  2. #42
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    One of the problems with the whole pitch framing idea is this: Pitch F/X calls the front edge of the plate, but the plate has depth(16 in). The catcher catches the ball a couple of feet? behind the plate. Where the catcher catches the ball really shouldn't matter. It is the track of the pitch that matters. Since Pitch F/X calls the front edge of the plate, it is going to be wrong sometimes on close pitches. Since umpires are apparently graded by Pitch F/X technology, I suspect the umpires are less concerned by where the catchers catch the ball, and more concerned with getting a good look at where the ball crosses or not crosses the front of the plate. That is probably what pitch framing is mostly about, trying to give the ump a good look at the ball.

    As far drjim wonders, I think those are good thoughts. I doubt if the cameras used in different stadiums are in actually the same places in all stadiums. I doubt if everything is always perfectly correlated either. As to the 2nd wonder, clearly when you watch games on TV it seems that different pitchers don't always seem to get the same calls from umps. It seems that pitchers like Deduno for example and maybe Gibson as well, guys who have a lot movement but not consistently the same movement don't get as many close calls. I have a hard time blaming Suzuki for that.

  3. #43
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    Quote Originally Posted by diehardtwinsfan View Post
    Dumb question, but how new is pitch framing as a stat? I ask b/c I haven't heard much about it until recently, and that tends to make me a bit nervous about quoting it as gospel truth.
    Pitch framing data for catchers is available for the last 8 seasons.

    http://www.statcorner.com/CatcherReport.php

    It has been shown to be consistent for catchers season to season as many other commonly used measures.

  4. #44
    Senior Member All-Star Willihammer's Avatar
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    Quote Originally Posted by Jim H View Post
    It seems that pitchers like Deduno for example and maybe Gibson as well, guys who have a lot movement but not consistently the same movement don't get as many close calls. I have a hard time blaming Suzuki for that.
    Who would you rather catch?


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