Defensive Metric Index

I hope to continuously update this page as I find more information...

NON-PLAY-BY-PLAY DEFENSIVE METRICS

1. Fielding Average

(Putouts + Assists) divided by (Putouts + Assists + Errors)

2. Bill James' Range Factor (RF)

RF= 9 * (Assists+Putouts) / Defensive Innings Played

3. Hardball Times's RANGE (RAA)

RAA Methodology

4. Baseball Prospectus's Rate2 (DTF derivitive?)

DTF Methodology

5. Bill James' Defensive Win Shares


PLAY-BY-PLAY BASED DEFENSIVE METRICS

1. STATS, Inc.'s Zone Rating (ZR)

2. Chris Dial's Modified Zone Rating (DZR)

Modfified ZR Methodology

3. Lichtman’s Ultimate Zone rating (UZR)

UZR Methodology - Part 1

UZR Methodology - Part 2

UZR and Beyond! An Interview with Mitchel Lichtman

4. Dave Pinto's Probablisitic Model of Range (PMR)

PMR Methodology

PMR Methodology 2

John Dewan's plus/minus System (as described in "The Fielding Bible")

The Fielding Bible

ARTICLES

Evaluating Defense By Tom Tippett

Evaluating the Evaluators (HBT)

A Detailed Comparison of Defensive Metrics

A glove affair - New methods shed light on evaluating defense (SI)

Evaluating the Evaluators (HBT)

USS Mariner Defensive Metric Summary

On Defense: Subjective Data, Objectively Considered

Defensive Doctrine: An Interview with John Dewan