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Martin RPI - OH Boys Rankings
Posted: Mon Jan 09, 2023 9:37 am
by Tri-StateYouthSports
Re: Martin RPI - OH Boys Rankings
Posted: Mon Jan 09, 2023 10:21 am
by bbjunky81
This is what I'm seeing for their top 10 in SEO district teams.
D2
#15 Washington Courthouse
#17 Miami Trace
#21 Vinton County
#24 Fairfield Union
#34 Gallia Academy
#40 New Lexington
#46 Ironton
#48 Marietta
#53 Warren
#79 Alexander
D3
#4 Minford
#12 South Point
#26 North Adams
#28 Zane Trace
#31 Valley
#34 Fairland
#41 Northwest
#66 Wheelersburg
#90 Belpre
#91 Westfall
D4
#2 Fairfield Leesburg
#17 Federal Hocking
#26 Paint Valley
#30 South Webster
#50 Green
#64 Notre Dame
#69 Eastern
#71 Whiteoak
#72 St. Joe
#89 Trimble
Re: Martin RPI - OH Boys Rankings
Posted: Mon Jan 09, 2023 10:43 am
by Tri-StateYouthSports
Here is a comparison between Pfoyd's and MartinRPI's rankings.
Re: Martin RPI - OH Boys Rankings
Posted: Mon Jan 09, 2023 4:22 pm
by pfloyd
Tri-StateYouthSports wrote: ↑Mon Jan 09, 2023 10:43 am
Here is a comparison between Pfoyd's and MartinRPI's rankings.
... nice work TSYS !!! ...
Re: Martin RPI - OH Boys Rankings
Posted: Mon Jan 09, 2023 4:27 pm
by pfloyd
pfloyd wrote: ↑Mon Jan 09, 2023 4:22 pm
Tri-StateYouthSports wrote: ↑Mon Jan 09, 2023 10:43 am
Here is a comparison between Pfoyd's and MartinRPI's rankings.
... nice work TSYS !!! ...
TSYS ... what does all of the Acronyms/Abbreviations stand for , for the column headings " Opponents Winning Percentage" Opponents/Opponents Winning Percentage" ... SSF ???
Re: Martin RPI - OH Boys Rankings
Posted: Mon Jan 09, 2023 4:44 pm
by Tri-StateYouthSports
@pfloyd FYI all I did was download the data from Martin PRI and added your corresponding ranking for comparison.
Martin RPI Formula = (WP x 35%) + (OWP x 35%) + (OOWP x 25%) + (SSF x 5%)
WP: winning percentage. Just your good ol’ wins and losses.
OWP: average of your opponents’ winning percentages. Calculating the averages of each of your opponents’ winning percentages will give you a slightly different result than if you find the OWP by adding the total number of wins by all your opponents, total number of losses by all your opponents, and finding the winning percentage that way (this is due to the varying number of games each opponent has played. If each of your opponents have played the same number of games, the result will be the same using both methods). If calculating on your own, be sure to average the winning percentages of each of your opponents and not the other way.
OOWP: opponents’ average opponents’ winning percentage. An example for this would be like saying Ohio State gets more points for beating a 15-3 Michigan State team than Dayton would get for beating a 15-3 Davidson team. This is because Michigan State’s 15 wins come against much tougher opponents playing in the Big Ten than Davidson’s opponents in the Atlantic 10 Conference.
SSF: School Size Factor. It’s a leveled point system which makes it slightly more beneficial to play schools larger than you. Table for how that works:
D1: 5.5
D2: 5.0
D3: 4.5
D4: 4.0
For each opponent you’ve played, you’d average these values to obtain your SSF, which makes up 5% of the RPI.
This exercise confirms, to any doubters, that the Pfloyd eye test is pretty spot on.
Re: Martin RPI - OH Boys Rankings
Posted: Mon Jan 09, 2023 4:58 pm
by pfloyd
Tri-StateYouthSports wrote: ↑Mon Jan 09, 2023 4:44 pm
@pfloyd FYI all I did was download the data from Martin PRI and added your corresponding ranking for comparison.
Martin RPI Formula = (WP x 35%) + (OWP x 35%) + (OOWP x 25%) + (SSF x 5%)
WP: winning percentage. Just your good ol’ wins and losses.
OWP: average of your opponents’ winning percentages. Calculating the averages of each of your opponents’ winning percentages will give you a slightly different result than if you find the OWP by adding the total number of wins by all your opponents, total number of losses by all your opponents, and finding the winning percentage that way (this is due to the varying number of games each opponent has played. If each of your opponents have played the same number of games, the result will be the same using both methods). If calculating on your own, be sure to average the winning percentages of each of your opponents and not the other way.
OOWP: opponents’ average opponents’ winning percentage. An example for this would be like saying Ohio State gets more points for beating a 15-3 Michigan State team than Dayton would get for beating a 15-3 Davidson team. This is because Michigan State’s 15 wins come against much tougher opponents playing in the Big Ten than Davidson’s opponents in the Atlantic 10 Conference.
SSF: School Size Factor. It’s a leveled point system which makes it slightly more beneficial to play schools larger than you. Table for how that works:
D1: 5.5
D2: 5.0
D3: 4.5
D4: 4.0
For each opponent you’ve played, you’d average these values to obtain your SSF, which makes up 5% of the RPI.
This exercise confirms, to any doubters, that the Pfloyd eye test is pretty spot on.
... Thanks TSYS ! the SSF are just a consistently used , arbitrary number for each Division size then ... I was going to say that I'm not that far off of his formula ... in some ways imo the eye test is more accurate ... but that's just my opinion ...
Re: Martin RPI - OH Boys Rankings
Posted: Mon Jan 09, 2023 8:11 pm
by TigerBob
These things will never be perfect, but they make a lot of sense. Should use them for seeding.
Re: Martin RPI - OH Boys Rankings
Posted: Mon Jan 09, 2023 8:31 pm
by Tri-StateYouthSports
TigerBob wrote: ↑Mon Jan 09, 2023 8:11 pm
These things will never be perfect, but they make a lot of sense. Should use them for seeding.
I believe that Northwest district is using it for seeding this year.
Re: Martin RPI - OH Boys Rankings
Posted: Mon Jan 09, 2023 9:03 pm
by Hoopie74
Fayetteville out of SHAC small school with 10-2 record currently at #14 in D4.
Re: Martin RPI - OH Boys Rankings
Posted: Tue Jan 10, 2023 8:12 am
by Whs95fan
Nice comparative list, just goes to show Pfloyd does know what he's talking about
. Will be interesting to see how the list changes from pretty much the midpoint of the season to the end.
Re: Martin RPI - OH Boys Rankings
Posted: Sun Jan 15, 2023 2:36 pm
by Tri-StateYouthSports