Why does "Baseball Daily" use BP effects?

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Ninersphan

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Re: Why does "Baseball Daily" use BP effects?

PostWed Sep 02, 2015 5:21 pm

ROBERTLATORRE wrote:
Musial6 wrote:This has always baffled me but - I can see how ballpark dimensions have an effect on home runs - how would that factor in to ball park singles though? Base paths are the same distance. So.........? If the fences are further back, does that mean outfielders generally play deeper and then singles are easier to drop in? Remember - there's never a stupid question - just stupid people!!! :lol:


I thought that too and compared a high BPS and lol BPS with real dimensions....that ain't it!

Nationals Park (1-17 singles)
Right Field:335 feet
Right-Center:370 feet
Center Field:402 feet
Left-Center: 377 feet
Left Field:337 feet

Petco Park (1-1 singles)
Right Field: 322 feet
Right-Center: 391 feet (was 402 feet)
Center Field: 396 feet
Left-Center: 390 feet (was 402 feet)
Left Field: 336 feet

LF to CF in Petco is approximately the same size as Nationals, and the BP factor is much smaller. So I have NO IDEA how this is derived.


It has to do with how many singles are given up. so if fielding and or pitching improves the numbers will change.
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ROBERTLATORRE

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Re: Why does "Baseball Daily" use BP effects?

PostWed Sep 02, 2015 5:32 pm

Ninersphan wrote:It has to do with how many singles are given up. so if fielding and or pitching improves the numbers will change.


So it's not really a ballpark effect, it's a Home Team pitching/fielding effect?

Basically, I could draft 2nd tier pitchers and they will perform better in Petco because the 2014 Padre's pitching and defensive efficiency is superior?

That sound you hear is my head exploding LOL.
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milleram

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Re: Why does "Baseball Daily" use BP effects?

PostWed Sep 02, 2015 7:37 pm

BP effects (especially HRs) are my worst pet peeve with strat--they are a complete fabrication with more to do with the players that play in the park than the parks themselves.

Atlanta 2013 was a heavily leaning LH hitters HR park---anyone who has been there knows it's much harder to hit a Homerun to RF than LF---just because Atlanta had a bunch of LH hitters with power that season the park was skewed completely opposite of it's normal natural tendencies. Completely unrealistic to me.

That the same physical park can change the laws of gravity from season to season is just idiotic to me.

Pick a norm for a park and stay with it.
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Radagast Brown

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Re: Why does "Baseball Daily" use BP effects?

PostWed Sep 02, 2015 10:21 pm

Excuse my ignorance but what is "Baseball Daily"?
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Ninersphan

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Re: Why does "Baseball Daily" use BP effects?

PostWed Sep 02, 2015 11:28 pm

Radagast Brown wrote:Excuse my ignorance but what is "Baseball Daily"?

It's the new game John Garcia posted about in his blog. I posted a thread about it that you post a comment it. Check the first post in that thread for a link describing the new game.
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Badjam

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Re: Why does "Baseball Daily" use BP effects?

PostThu Sep 03, 2015 6:29 am

Could ballpark singles be related to how much room in foul territory? More foul balls that go out of play allows more potential singles. Just a guess though.
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apolivka

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Re: Why does "Baseball Daily" use BP effects?

PostThu Sep 03, 2015 9:25 am

SOM has explained the BP-SI determination methods many times since the start of using it in about 1984. They calculate them over a three+ year period averaging all the stats of the visiting teams to attempt to minimize HFA bias in the statistics. But some parks give up way higher batting averages than others after removing the HR effect, and it's definitely not some sort of illusion, it's a HUGE factor is comparing players.

Foul territory is probably the largest contributor. The parks with the most foul territory in play will have many more outs recorded with popup fouls being caught rather than having them reaching the stands for a strike. The "speed" of the infield grass also contributes. How well the batters see the ball also comes into play with some parks having a better "batter's eye". The actual field dimensions do contribute, like in Boston for an extreme example, but it's less than these other factors.
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