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3leftturns

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Reply with quote  #31 
Reverse?
gonegolfin

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Reply with quote  #32 
Quote:
Originally Posted by 3leftturns
Reverse?

Penalty instead of a bonus ... Bottom Base RPI 25/50/75.

Brian
3leftturns

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Reply with quote  #33 
So, 75 there means the bottom 75-51 in RPI?
Prowler

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Reply with quote  #34 
So is the theory behind a 'bonus' for a road win and a 'penalty' for a home win (it counts as less than a win) such that if a team goes on the road and wins one game in a three-game series, it's as if the two teams split evenly?

That sounds kind of ridiculous to me. I seriously doubt it, say, Minnesota winsi two out of three at home from Michigan that the Gophers would consider that a draw. Or vice-versa.
jayrot

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Reply with quote  #35 
Quote:
Originally Posted by gonegolfin

Sure there is ... I have posted the bonuses (and penalties) on this forum a number of times.

.0028/.0021/.0014 Base RPI Top 25/50/75

Apply the reverse for penalties.

Brian


Just for clarification, this is just the existing bonus/penalty structure.

The other discussions is about home/away calculations, where the following would calculations would take place:

Home win = .7 of a win
Home loss = 1.3 of a loss

Road win = 1.3 of a win
Road loss = .7 of a loss

Neutral site games would all be valued at 1.0 whether win or loss.

Is this correct Brian? And are they non-conference games only?
gonegolfin

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Reply with quote  #36 
Quote:
Originally Posted by 3leftturns
So, 75 there means the bottom 75-51 in RPI?

Correct.

Brian
jayrot

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Reply with quote  #37 
Quote:
Originally Posted by Prowler
So is the theory behind a 'bonus' for a road win and a 'penalty' for a home win (it counts as less than a win) such that if a team goes on the road and wins one game in a three-game series, it's as if the two teams split evenly? That sounds kind of ridiculous to me. I seriously doubt it, say, Minnesota winsi two out of three at home from Michigan that the Gophers would consider that a draw. Or vice-versa.


Basically the road team who goes 1-2 record wise, would have an RPI adjustment that would leave them at 1.3-1.4, and the home team would walk away with 1.4-1.3 RPI adjustment.
3leftturns

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Reply with quote  #38 
I DO think those percentages for home/road bonus/penalty are too severe.

1.2/.8 would make more sense
gonegolfin

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Reply with quote  #39 
Quote:
Originally Posted by jayrot

Just for clarification, this is just the existing bonus/penalty structure.

The is the bonus/penalty structure that was in place for 2016. While the NCAA has altered these values somewhat over the years, I have not heard of any changes for 2017. But if there are changes for 2017, it will be trivial to determine the exact changes once the detail reports are released.

RPI bonuses and penalties are only for non-conference games. If you recall, I lobbied for the removal of RPI bonuses for conference wins after the 2012 season. This action was taken.

Quote:
Originally Posted by jayrot

The other discussions is about home/away calculations, where the following would calculations would take place:

Home win = .7 of a win
Home loss = 1.3 of a loss

Road win = 1.3 of a win
Road loss = .7 of a loss

Neutral site games would all be valued at 1.0 whether win or loss.

Is this correct Brian? And are they non-conference games only?

I have not heard of any changes to the formula in 2017. Meaning ... I have not heard that they are adding multipliers for home/road. This is something I suggested after the 2012 season and was considered by the committee. But it was simply taken under consideration at the time and they wanted to watch the effect in baseball. If there are changes for 2017, it will be easy to determine what they are once the detail reports are released.

The above home/road multiplier has been used by baseball since 2013 (all games). They got the multiplier wrong in my opinion (too heavily weighted in favor of road games). It also has the strange effect of placing more negative emphasis on home games than road games for teams with an adjusted WP above .5000 (those contending for the postseason). For example, if you are going to win one game and lose one game ... it is best to win the home game and lose the road game. The reverse is true for teams with an adjusted WP below .5000.

Note that baseball dropped the RPI bonuses/penalties for performance against the RPI Top 25/50/75 and Bottom 75/50/25 when they moved to the home/road multiplier. If softball were to adopt the home/road multiplier, I would expect these bonuses/penalties to be dropped as well.

One final note ... baseball does have a penalty provision where a team that plays four or more non-D1 games will receive an RPI penalty (.0022). Playing six non-D1 games also nets you another penalty of .0022 ... and each game thereafter has the same .0022 penalty applied. A home loss to a non-D1 team results in a penalty of .0022, a neutral loss is a penalty of .0017, and a road loss is .0011. There is no penalty for a tie.

Brian






3leftturns

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Reply with quote  #40 
Quote:
Originally Posted by gonegolfin

Penalty instead of a bonus ... Bottom Base RPI 25/50/75.

Brian

So, the lowest listed team is Grambling at 295.

Does this mean that there is no penalty as long as your loss isn't to a team that is worse than 220?
gonegolfin

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Reply with quote  #41 
Quote:
Originally Posted by 3leftturns

So, the lowest listed team is Grambling at 295.

Does this mean that there is no penalty as long as your loss isn't to a team that is worse than 220?

Worse than 220 (221 -> 295) Base RPI ... not Adjusted RPI.

Brian
3leftturns

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Reply with quote  #42 
Quote:
Originally Posted by gonegolfin

Worse than 220 (221 -> 295) Base RPI ... not Adjusted RPI.

Brian
wow... so it is exceedingly rare to be penalized, at least among tournament teams
3leftturns

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Reply with quote  #43 
Also, the conference rpi for a team includes that team's own record.... is that odd?
AleDawg

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Reply with quote  #44 
Quote:
Originally Posted by 3leftturns
Also, the conference rpi for a team includes that team's own record.... is that odd?


What does a conference RPI do in terms of seeding or ranking?

Is it a primary factor or just a tiebreaker?

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3leftturns

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Reply with quote  #45 
Quote:
Originally Posted by AleDawg


What does a conference RPI do in terms of seeding or ranking?

Is it a primary factor or just a tiebreaker?
I am guessing it is just a peripheral bit of data... I'm just surprised that there are only 32 rankings there, and not 295... seems very UN-RPIish
CajunAmos

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Reply with quote  #46 
Since RPI is a purely numerical calculation, I don't the ranking of your conference plays any part other than the win/loss records of the teams you play in conference and the same with their opponents but Brian can verify the exact calculation. That's why historically a mid-major could play a top 3 non-conference RPI schedule and win those games and wind up a high seed due to their conference while someone from a major softball conference gains RPI even if they lose a good portion of the games.
3leftturns

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Reply with quote  #47 
More of a curiosity .... I just wonder if stanford's conference rpi without their own numbers in the mix is stronger than, say, a Texas a&m's.
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