The Mockingbird

Joba Time (about 60 minutes of it)

with 6 comments

Well, that was quick. After all the excitement over Joba Chamberlain, he lasted 2 1/3 innings against the Blue Jays, walking out four and striking out three. He also only got in one good fist pump- after what turned out to be a foul ball on the first batter he faced, Shannon Stewart (who he later walked)…

[Jump to the pitch f/x goodness at Baseball Digest Daily]

While I’m at it, there’s another offering o’ mine there about the stupid pitchtracker thing you see on Jays broadcasts that shows pitches that clearly have crossed the edge of the plate as about three inches outside. I think I heard Tabler chuckle at it tonight when it he called a pitch right on the outside corner and it called him blind – I’d love to see them show both the overhead angle and the little box during the same at bat so it can be officially debunked as useless on-air…

Written by halejon

June 3, 2008 at 9:24 pm

Posted in Seriousness

6 Responses

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  1. Are you too disturbed by JP’s “lack of urgency”?

    johnny was

    June 4, 2008 at 11:53 pm

  2. Well, maybe- I’m not so sure it’s J.P’s, though…

    halejon

    June 5, 2008 at 1:32 am

  3. I was wondering if we could see the pitch f/x of Mussina to see what calls he was getting.

    brent in Korea

    June 5, 2008 at 2:54 am

  4. Hey Jon,

    An Idea that I had:

    How about making ump statistics, or rather try to visualize the strike zone for each ump (against the regulation strike zone.

    So based on a collection of charts as you usually provide, a similar chart can be created indicating a strike zone “cloud”. i.e. the distribution of probability that a pitch in a given spot will be called a strike.

    What do you think?

    I am currently in Germany and very busy, but come September I will be happy to lend my programming skills.

    Ron

    June 5, 2008 at 7:25 am

  5. Ron:

    It’s a really interesting idea. I took a stab at umpire statistics in an article for the Hardball times called “a zone of their own”, that just added up how many “extra” calls to each side of the plate they were giving. I’ve also done those “heat map” things (and sometimes you can see what looks like a blind spot in certain areas for umps), but they only take into account the raw density of strikes, and not the probability of one being called (which is not as bad as it seems but imperfect).

    But yah- what is really needed is some way to do a 3d probability chart. I know how to do a 2d one with R (like this), but not how to put the two together. I’ve thought about breaking the zone down into little tiny boxes or something, but never got around to it. If you want to pool talents in Sept, that would be great. It could be a huge opportunity because umpire scouting is pretty much nonexistent at this point.

    Oh yah, the other thing I found waybackwhen was that sample sizes were trouble- but 2 years of data should make start to clear things up…

    halejon

    June 5, 2008 at 11:14 am

  6. I agree with the need for another “umpires on the take” post. Seemed like Mussina was getting very marginal calls that Litsch wasn’t, right until the 6th, when it looked like Mussina started getting a tighter zone and was frustrated by it.

    Torgen

    June 5, 2008 at 11:36 am


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