Dewan: Introducing the PART system to Defensive Runs Saved

From SABR member John Dewan at ACTA Sports on December 12, 2019:

Defensive Runs Saved has received its biggest update since the release of The Fielding Bible: Volume IV in 2015. For infielders, the Range and Positioning System has been replaced with the PART System, which stands for Positioning, Air balls, Range, and Throwing.

This new system offers the ability to split infielder performance on groundballs and short line drives into three different components going back to 2013. We already had the ability to evaluate players on air balls, but the other three components of PART offer a brand new look at players.

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Originally published: December 12, 2019. Last Updated: December 12, 2019.