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Posts: 857
05/27/08 03:27 PM
From March 3 (we were nicer to each other back then, jfish.) TedRoethke wrote: -------------------------------------------------------------------------------- Would you or your fellow players know if ZiPS at least uses a standard (as opposed to actual) left/right differential for players, or if the split is exactly the same left and right? -------------------------------------------------------------------------------- Diesel wrote: If the player records on the ZiPS Projection disk were created using the "Overall" method, which I think we can assume, then DMB would "use historical norms to rate batters to perform better against opposite-handed pitchers. The difference is about 20 batting average points and 30-40 points in slugging average. In other words, a lefty hitter who batted .280 overall would be rated to hit about .287 against righties and .267 against lefties. If that player faces righties about 2/3 of the time, his overall average in his DMB games would be around .280. Similar adjustments are made for right-handed batters and for pitchers." David
TedRoethke wrote: -------------------------------------------------------------------------------- Would you or your fellow players know if ZiPS at least uses a standard (as opposed to actual) left/right differential for players, or if the split is exactly the same left and right? --------------------------------------------------------------------------------
Diesel wrote:
If the player records on the ZiPS Projection disk were created using the "Overall" method, which I think we can assume, then DMB would "use historical norms to rate batters to perform better against opposite-handed pitchers. The difference is about 20 batting average points and 30-40 points in slugging average. In other words, a lefty hitter who batted .280 overall would be rated to hit about .287 against righties and .267 against lefties. If that player faces righties about 2/3 of the time, his overall average in his DMB games would be around .280. Similar adjustments are made for right-handed batters and for pitchers." David
http://dmbforum.yuku.com/sreply/32359/t/Projection-disk-2008.html
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