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Defensive Metrics Newsbeat

Friday, July 06, 2018

Jeff Passan on Twitter: “1) I totally buy the idea that players can bring significant value via defense. 2) I have not seen every Cubs game this year, so maybe I’m missing something. 3) I stand by my years-old contention that publicly available defen

When you find a metric which surprises you, it’s best to dig into the data a little before you say something silly. Anway, and I know this is an outlier, the entire ?thread? is worth reading.

 

Jim Furtado Posted: July 06, 2018 at 04:45 PM | 48 comment(s)
  Beats: defensive metrics

Friday, April 06, 2018

Fangraphs: 2018 UZR and UZR Update!

The methodology has changed a little that allows UZR to account for some of the noise associated with imperfect data. The net result of this change is that extreme UZR’s, which were likely caused by, to some extent at least, noise in the data, rather than extreme performance, will be slightly ‘dampened.’ We think that these new values, while very close to the old ones in most cases, more accurately reflect the actual performance of the players in question.

I’ve always had a problem with trusting defensive metrics. The nature of the beast demands some level of uncertainty, and changing valuations — sometimes dramatically — does nothing to make me trust them more. The ‘dampening’ is particularly notable to players who have been hugely valuable based on these defensive metrics: Andrelton Simmons, Jason Heyward, Kevin Kiermaier, and several others. Adjust your Internet arguments accordingly.

Los Angeles El Hombre of Anaheim Posted: April 06, 2018 at 04:14 PM | 15 comment(s)
  Beats: defensive metrics, fangraphs

 

 

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