Date: Thu Jul 24 08:02:32 2008
Sender: Jay Wells
Is there some hidden attribute that determines a batter's propensity to have
platoon splits? Over time, I have noticed that some players have pronounced
platoon splits and some do not. and then there's my EPBL St Louis SS, W
Garcia, a right-handed hitter:
YR PAs Overall vs LHP vs RHP
63 138 270/331/476 205/205/341 305/389/549
62 582 273/367/422 225/329/373 291/381/440
61 670 266/350/479 284/371/585 258/340/431
60 425 259/344/433 265/353/348 256/339/477
59 528 280/385/446 277/377/471 281/388/437
What's going on here? Based on those numbers, I would classify Garcia's
splittish-ness as follows:
63 - Strong reverse split, but small sample size
62 - Strong reverse split
61 - Traditional split
60 - Small traditional split
59 - No split
I have seen this seeming randomness with other players, but not to this degree,
which would seem to be large enough that you couldn't write it off as
statistical noise.
Thoughts?
Date: Thu Jul 24 10:12:07 2008
Sender: AJ Perko
I remember seeing there is an attribute, though I'm not 100% sure how it works.
I believe it is a sliding scale
1 to 100 scale
1 25 50 75 100
LL SL S SR RR
meaning if your a 1 LL you hit right handers best of all but have a penalty
against lefties, though you could also be a 24 LL and not have as severe an
advantage or penalty.
At least thats how I've always assumed it's worked.
Date: Thu Jul 24 13:11:33 2008
Sender: Tomasz Radko
Jay
As for this season - you found the reason yourself, small size of the sample.
As for the past - your hitter is stable against RHP. OPS .825, .816, .771,
.821. He isn't against LHP. Why? I think stats against LHP are more variable
because of the lesser number of LHP, so the size of the sample is smaller. So
there is more influence of stadium effect and "toughness" of the opponents (it
didn't "averaged", because the distance was short).
I think it's perfectly normal stats. I could be wrong, but it would take a lot
more work to prove it. It would need a normalizing against the park effect and
the pitchers ability.
Date: Mon Jul 28 15:52:20 2008
Sender: Andy Dolphin
The quick answer is that, no, DEL does not simulate any variation in platoon
splits.
But, it's an interesting topic. If you've read "The Book", I spend a great
deal of time talking about this in chapter 6. The quick version is that there
isn't any evidence that any current MLB players have negative splits. There
are quite a few who are close to neutral, but no statistically-defensible
negative splits...
Date: Tue Jul 29 14:19:45 2008
Sender: Jay Wells
"The quick answer is that, no, DEL does not simulate any variation in platoon
splits."
Wow. That's pretty earthshattering. The corollary to that must mean that any
year-to-year (or maybe, player-to-player, all else being qual) variation in
platoon splits is random noise?
Oz, does this change your approach to building an offense?
That certainly puts a damper on the need to research platoon splits, IMO, other
than the extent to which similar batters faced different L/R pitching mixes.
Hmmmmm. . .
Date: Fri Aug 1 05:47:15 2008
Sender: Just Oz
Jay ... not sure if it changes things much or just means looking for righties
and lefties to split time.
I will say that I'm surprised since I have seen what appears to be a strong
split that way in some players.
Andy didn't say that there weren't R vs L advantages just not individual player
splits.
It will probably simplify things for me going forward where I look for more
lefties to start against righties and a few righties to platoon against
lefties.
Date: Mon Aug 4 21:54:24 2008
Sender: AJ Perko
I'm not sure what "splits" technically are... but I like righties vs lefties
and lefties vs righties and about 1/2 my team platoons.
It's gotten me to 3 EPBL championships and 6 NL Title games in 12 seasons-
Date: Wed Aug 6 18:57:45 2008
Sender: Andy Dolphin
I don't think this is earthshattering news; it's come up before. But just to
clarify:
all "R" players have the same platoon split.
all "S/R" players have the same platoon split (but different from plain RH)
... and likewise for S/L and L.
So there are four sets of platoon splits. This is also true of pitchers, of
course.
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