The Poor Man’s Analyst

Evaluating Defensive Talent

with 10 comments

Evaluating defensive talent is a very difficult thing to do. That’s why companies like STATS, Inc. and Baseball Info Solutions have dozens of people around the country tracking where each ball was hit, how hard it was hit, and whether it was a ground ball, fly ball, line drive, or a combination of the last two, called a “fliner.” They then take all this data back to the lab and figure out how many runs each fielder saved (or allowed) compared to what an average fielder would have done in the same number of chances. Now there is no physical person out there representing the average player in every game situation. In other words, when Jose Reyes ranges deep into the hold, we don’t have a guy standing out there representing average to compare Reyes to. Defensive statistics fall under the category of “Inferential Statistics.” For a good explanation of what we can learn about defensive stats, I suggest reading this, from Dave Cameron. UZR is probably the best publicly available fielding stat out there, and can also be found on FanGraphs. For an explanation on what these new stats mean, click here.

As Dave noted in that post about inferential statistics, we should keep in mind the uncertainty associated with this. That is why I will often use Chone’s defensive projections (bottom of the page). These take multiple years of data from multiple sources, regress the data, and then apply an aging factor. These are more reliable than defensive stats from any one source.

Positional Adjustments

Why do we need positional adjustments? Here’s your answer. And here‘s exactly how much of an adjustment we give to each position:

12.5 C
7.5 SS
2.5 CF
2.5 2B
2.5 3B
-7.5 LF
-7.5 RF
-12.5 1B
-17.5 DH

Advertisements

Written by dcn29

December 10, 2008 at 3:25 PM

10 Responses

Subscribe to comments with RSS.

  1. […] nails news newsclick newsticker news.at newsid newsru.com news.de newsnow news This entry was posted in Uncategorized by admin. Bookmark the […]

  2. […] of the world news movie newsboys newsweek newsmakers newsletter software news bloopers news newsboys news reporter goes ghetto This entry was posted in Uncategorized by […]

  3. […] newsweek newsday news and observer news 12 news channel 5 newseum newsmax news4jax news channel 9 This entry was posted in Uncategorized by admin. […]

  4. […] newsboy caps newspaper obituary newspaper malayalam newspaper yahoo news fox news cnn news abc news bbc news This entry was posted in Uncategorized by admin. Bookmark […]

    Learning Rails | wp1

    July 9, 2011 at 5:10 PM

  5. […] bloopers news newsboys news reporter goes ghetto newsboys born again newswoman fail news fail news reporter bloopers news bloopers 2011 newspaper nails This entry was posted in […]

  6. […] newsday news and observer news 12 news channel 5 newseum newsmax news4jax news channel 9 yahoo news This entry was posted in Uncategorized by admin. […]

  7. […] abmelden newsletter anmelden news of the world news movie newsboys newsweek newsmakers newsletter software news bloopers news This entry was posted in Uncategorized by […]

  8. […] rack newsboy hats for men newsprint paper newsweek subscription newspaper dress newsboy cap news paper newswear pouch 85mm newsletters newspapers obituaries This entry was posted in […]

  9. […] channel 5 newseum newsmax news4jax news channel 9 yahoo news fox news cnn news abc news bbc news This entry was posted in Uncategorized by admin. Bookmark […]

  10. […] news abc news bbc news dallas morning news oj simpson news detroit news newport news cbs news newsletter newsletter abbestellen This entry was posted in Uncategorized […]


Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: