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Careful Using LD%

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Careful Using LD%

Postby GotowarMissAgnes » Wed Jan 07, 2009 5:30 pm

If you are one of those fantasy types that likes using batted ball measures to identify hitters likely to improve or regress, you might take a look at this article.

http://www.fangraphs.com/blogs/index.ph ... ne-drives/

I had doubts about the ability of some of these measures, because I once looked at JCBradbury's PrOPS data and found it was of little use to predict next year's performance. Trying to identify under or over valued players using BABIP or LD% would appear to be questionable.
"I don't want to play golf. When I hit a ball, I want someone else to chase it."
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Re: Careful Using LD%

Postby bigh0rt » Wed Jan 07, 2009 5:51 pm

Very nice article. Thanks for posting it up ;-D
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Re: Careful Using LD%

Postby ayebatter » Wed Jan 07, 2009 6:26 pm

Read it this morning, I'm looking forward to his follow-up.
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Re: Careful Using LD%

Postby raiders_umpire » Wed Jan 07, 2009 7:49 pm

Read it earlier. I can't wait to see his next piece, but I am glad that I don't have to run the numbers on the data. :-o
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Re: Careful Using LD%

Postby AquaMan2342 » Wed Jan 07, 2009 7:59 pm

Awesome article!
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Re: Careful Using LD%

Postby J35J » Wed Jan 07, 2009 11:37 pm

No suprise that LD% are not very accurate.....glad I take 'em with a grain of salt. There will be articles that come out that debunks alot of the "holy" SABR stats in some way I'm sure... !+)
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Re: Careful Using LD%

Postby JTWood » Wed Jan 07, 2009 11:42 pm

I hate it when someone makes an intelligent, well thought out observation about something that was a faint whisper in my mind; an idea I simply pushed aside.

I've often wondered how they actually defined what a LD actually is, but did I ever ask? :-[
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Re: Careful Using LD%

Postby KCollins1304 » Wed Jan 07, 2009 11:45 pm

JTWood wrote:I hate it when someone makes an intelligent, well thought out observation about something that was a faint whisper in my mind; an idea I simply pushed aside.

I've often wondered how they actually defined what a LD actually is, but did I ever ask? :-[


It's really ironic that they use the LD% to try to achieve a more objective point of view about luck by using a subjective stat recorder(or whatever those people deciding what is and isn't a LD are)
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Re: Careful Using LD%

Postby JTWood » Wed Jan 07, 2009 11:53 pm

That's it. It's official.

I don't like irony. :-C
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