FanGraphs Baseball

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  1. Feel free to delete this comment immediately, just to let you know you started with here at fanpraphs

    Comment by Joe Crede — November 16, 2010 @ 4:04 pm

  2. wow these are really cool. excellent work. I always wondered how much plate discipline Brett Gardner has. It seems to me like he is pulling a Luis Castillo and just flat out not swinging until he has two strikes.

    Comment by SF 55 for life — November 16, 2010 @ 6:08 pm

  3. Brett Gardner really really likes that low and away pitch it seems (or is it low and in?)…

    Comment by Matt — November 16, 2010 @ 6:43 pm

  4. I found this really useful, thanks. Seeing them side by side makes a lot more sense than just one alone.

    Comment by PiratesBreak500 — November 16, 2010 @ 6:43 pm

  5. These graphs should help dispel the notion that plate discipline is all about not swinging at bad pitches. It’s also about not letting fat pitches go buy for free, as Gardner (and L Castillo, and many others) seem to do.

    The graphs are kind of cool, but I’d much rather see a bit more granular version of OSwing and ZSwing, using 4 categories instead of two. Divide ZSwing into ‘within the circle’ and ‘outside the circle’, and OSwing into 3″ or less outside, and further than that. The size of the fat pitch circle and the ‘close but outside’ categories could be determined just by looking at how the data shakes out.

    If fangraphs can do that, it would be really insightful.

    Comment by dcs — November 16, 2010 @ 6:58 pm

  6. Good question. Are these charts from the pitcher’s POV or from the hitter’s?

    Comment by WY — November 16, 2010 @ 7:01 pm

  7. As stated in the article:

    The view is from the catcher’s perspective looking at the pitcher.

    With Gardner’s one zone, it is probably just a couple pitches in that zone. From now on I am going to add in a league average value to each box to each areas like that one from showing up.

    Comment by Jeff Zimmerman — November 16, 2010 @ 7:13 pm

  8. Nice work…

    It might also be useful to look at count (though that would probably lead to issues with sample size). Maybe a look at 2 strikes vs <2 strikes (and ignoring the # of balls in the count so the samples don't get too small)

    Comment by Hank — November 16, 2010 @ 7:29 pm

  9. Scrolling through this post makes me feel like I’m playing some trippy 80′s era arcade game.

    Comment by Krog — November 16, 2010 @ 7:30 pm

  10. Interesting. I’d love to see some of these in conjunction with the metrics discussed by Tango at http://www.insidethebook.com/ee/index.php/site/comments/swing_rates/.

    AFAICT, the numbers discussed there look like pretty good ways of measuring who sees the zone best (i.e., players who both swing at lots of strikes and take lots of balls). It’d be interesting to see a visual representation of how those players swing compared to others.

    Comment by fang2415 — November 16, 2010 @ 7:31 pm

  11. I will hopefully be able to look at this soon. I will need to regress the numbers to the league average.

    Comment by Jeff Zimmerman — November 16, 2010 @ 9:50 pm

  12. The sample size might be tough, but especially for someone like Gardner (and others who try to work the count) it would be interesting to see his swing % with 2 strikes. While one would expect the swing % in the strikezone to obviously change with 2 strikes, it would be interesting to see how much of a change in discipline there is on pitches outside of the zone (essentially subtract the 2 strike swing % plot from the less than 2 strike swing % plot)

    In theory you could consider the change within the zone vs the change out of the zone as a different way of measuring plate discipline.

    Anyway…. cool stuff!

    Comment by Hank — November 16, 2010 @ 11:38 pm

  13. This is really interesting stuff. I love the colors. Guerrero’s chart is hilarious – flaming red and orange anywhere near the strike zone. And then there’s the almost complete absence of light purple. If the pitcher chucks a ball in the general vicinity of the plate, there is a pretty good chance that Guerrero will swing. I guess we already knew that, but the colors really bring it home for me.

    Comment by Jaik Jarrkjens — November 16, 2010 @ 11:46 pm

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