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Thursday, April 05, 2012

2012 ZiPS Projections, Final Edition

This is the final ZiPS release looking ahead at the 2012 season. These were finalized before the A's-Mariners games, so there's not "cheating" by including the 2 days of statistics into the model. The .zip file contains a full spreadsheet for Excel 2010 and CSV files for the batters and pitchers.

In addition to the usual projected things, I've now included the platoon splits and estimated projection for defensive runs.

Disclaimer: ZiPS projections are computer-based projections of performance. Performances have not been allocated to predicted playing time in the majors - many of the players listed above are unlikely to play in the majors at all in 2012. ZiPS is projecting equivalent production - a .240 ZiPS projection may end up being .280 in AAA or .300 in AA, for example. Whether or not a player will play is one of many non-statistical factors one has to take into account when predicting the future. A projection indicating how any given player would play in the majors rather than simply a blank line for many of the prospects and journeymen listed is less information and projecting how good someone is, rather than how much someone will play as a result of external decisions, is more consistent with application of the strengths of a computer. ZiPS isn't bad at projecting total *professional* playing time as there's a relationship between past playing time and future playing time, but there's a lot of specific decision-making and external events that affect this number.

ZiPS is projecting based on the AL having a 4.19 ERA and the NL having a 3.96 ERA.

Dan Szymborski Posted: April 05, 2012 at 01:21 PM | 23 comment(s) Login to Bookmark
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