Thursday, September 19, 2013
Off + Def = WAA
Fangraphs has introduced the Off and Def as rolledup values. Previously, you'd have to add the hitting and baserunning portions to get Off, as well as the fielding (aka UZR) and positional value to get defense. Now, it's nicely rolled up in the leaderboards.
A good comment in the comment section: we don't need a qualifier for playing time, as this may knock out guys who were great (or terrible) in limited time. WAA is a combination of a rate stat and playing time stat, essentially: PA * (rate performance - league average rate).
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And note that WAA + Repl Level = WAR. Therefore, this presentation of Off and Def definitely gets my thumbs up (to whomever it is that that's important anyway).
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• 2013/09/20
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