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J.Duchscherer: 9-6, 21 GS, 128 IP, 132 H, 54 ER, 15 HR, 26 BB, 102 SO, 3.80 ERA
J.Affeldt: 8-11, 27 GS, 128 IP, 139 H, 77 ER, 15 HR, 66 BB, 76 SO, 5.41 ERA
B.Myers: 12-10, 31 GS, 193 IP, 192 H, 89 ER, 32 HR, 56 BB, 183 SO, 4.15 ERA
R.Dempster: 9-11, 27 GS, 141.7 IP, 149 H, 80 ER, 17 HR, 64 BB, 106 SO, 5.08 ERA
C.Villaneuva: 8-8, 22 GS, 143.3 IP, 147 H, 76 ER, 22 HR, 55 BB, 110 SO, 4.77 ERA
Over on the DMB forum, there's some discussion about how splits play out in your ZiPS disk. David Pyke, DMB's tech support man, said as follows:
"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."
I'm thinking that what David says is indeed the case with ZiPS: that if you use the disk, over time, splits will tend to fall out along the lines of historical norms. There have been some questions posed by folks who are assuming (without being certain or testing them) that the splits are totally vanilla; i.e., they don't exist.
Knowing what you know about DMB's game engine and how the ZiPS disk was created, would splits tend to fall out over historical norms over time?
Thanks.
TR
I've always taken it for granted that any split created with overall would have the event table apply generic historical splits as that's always been my experience - I've played a ridiculous amount of DMB. If I thought that "Overall" generated an event table was the same for lefties as righties, I'd definitely make more of an effort to project splits. The only thing I've done differently this year (though not for the first release) is regenerate tables for starting switch-hitters with strong platoon splits (like Orlando Hudson) by changing them to the side of the plate they're in tune with, regenerating the event table, and then putting them back to switch.
Thanks for taking the time to answer. I think this will make some posters on the DMB forum (including me) pretty happy.
Is it okay if I put your reply up on the thread where this is being discussed, or would you rather answer questions there yourself if you post there?
Thanks again.
Thanks for your feedback. Dan.
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