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Defense Newsbeat

Monday, August 13, 2018

Fangraphs: Jackie Bradley, Jr. and the Error Rule

To summarize:

1. The MLB rules state that the part of the error rule about ordinary effort is an objective standard.

2. The part of the error rule that says it’s all dependent on the judgment of the official scorer establishes a subjective standard.

3. Statcast is more 1. than 2.

IMO the standard of “ordinary effort” applies to any part of the fielding process, not the sum total. If a fielder gets an extraordinary jump, runs with extraordinary speed on an unusually efficient route, and then botches the catch, it doesn’t matter that ordinary effort wouldn’t have put him in position to make the catch. A fielder in position to make the catch will, in ordinary effort, make the catch. Failing to catch it, after getting into position, is an error. Failing to get into position to make the catch - through ordinary effort - is not an error.


Thursday, July 26, 2018

J.D. Martinez’s Defense? What The Numbers Really Say

The graphics are goofy; the videos are useful; the conversation is fantastic. A moderate-depth piece from Alex Speier on why some advanced defensive metrics aren’t advanced enough.

“Statcast data has changed the way that internally teams are doing defensive evaluations,” Stern told Martinez. “But to the best of my knowledge, I don’t think very much of that is public, so it hasn’t really changed any of the public-facing numbers that people have access to.”

Martinez had heard similar feedback last year after he was traded from the Tigers to the Diamondbacks. With Detroit, Martinez had graded as well below-average. After his trade, UZR and DRS offered favorable numbers for his work. Martinez recalled a conversation with Arizona head of analytics Mike Fitzgerald in which he discussed the disparity.

“My [UZR] has always been a negative in the outfield,” recounted Martinez. “Then I go to Arizona and my [UZR] is positive. I go, ‘What’s the difference?’ He said, ‘Now we’ve got you positioned right.’ ”


Thursday, July 12, 2018

This Orioles Defense May Be the Worst We’ve Ever Seen

... these Orioles are mind-bogglingly bad at catching balls put in play. Orioles fielders have combined for negative-84 runs of defensive value compared with the average team, per the advanced stat defensive runs saved. That is already one of the 10 worst totals… At their current pace, they will finish the season with negative-160 DRS—40 worse than the previous record holder, the 2005 Yankees.

NattyBoh Posted: July 12, 2018 at 11:07 AM | 15 comment(s)
  Beats: baltimore orioles, defense, manny machado, records

Wednesday, May 30, 2018

How Mike Trout improved his defense

You don’t get to be the best player alive if you aren’t always trying to get better, and this year, his focus was defense. For all the highlight-reel catches, Trout hasn’t actually been rated all that highly by defensive metrics over the past few years. It’s been the only minor flaw on an otherwise spotless resume.

“There are a lot of defensive metrics out there you want to get better on,” said Trout to MLB.com in February.

So far, so good: One-third of the way through the season, Trout’s defense looks better. It’s been rated better. In an admittedly small sample, Trout looks like he’s once again identified something he wants to fix and done exactly that.

Nice to see Mike Trout do some actual work for once.

Los Angeles El Hombre of Anaheim Posted: May 30, 2018 at 01:17 PM | 135 comment(s)
  Beats: angels, defense, mike trout

 

 

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