Coach's AdminSchedulesScoresBlogsGameStreamsPhoto GalleriesSport Previews
 
 
 
 

Upcoming Web Casts

(Click For Complete Broadcast Schedule & Archives)
1/23 Boys Basketball  American Falls vs Aberdeen
1/24 Girls Basketball  Firth vs Ririe
1/24 Boys Basketball  Vallivue vs Emmett
1/24 Boys Basketball  West Side vs Marsh Valley
1/25 Girls Basketball  Garden Valley vs Council
1/25 Boys Basketball  Garden Valley vs Council
1/25 Boys Basketball  Payette vs Fruitland
1/25 Boys Basketball  Sugar-Salem vs South Fremont
1/26 Girls Basketball  Horseshoe Bend vs Notus
1/26 Girls Basketball  Bear Lake vs Aberdeen
1/26 Boys Basketball  Burley vs Rigby
1/26 Boys Basketball  Horseshoe Bend vs Notus
1/26 Girls Basketball  Parma vs Homedale
1/26 Boys Basketball  Skyview vs Bishop Kelly
1/27 Boys Basketball  Parma vs Fruitland
1/31 Boys Basketball  Madison vs Rigby
1/31 Boys Basketball  Preston vs Century
2/2 Boys Basketball  Challis vs Grace
2/2 Boys Basketball  Mountain View vs Meridian
2/2 Boys Basketball  Skyline vs Blackfoot
2/2 Boys Basketball  Weiser vs Fruitland
2/3 Boys Basketball  Dietrich vs Rockland
2/7 Boys Basketball  Firth vs Ririe
2/7 Boys Basketball  Homedale vs Fruitland
2/8 Boys Basketball  Boise vs Mountain View


Most Recent Action Photo Galleries

(Click For Complete List Of Galleries)
1/20 Girls Basketball  JV Buhl vs Canyon Ridge
1/20 Girls Basketball  Kellogg vs St. Maries
1/20 Girls Basketball  Buhl vs Canyon Ridge
1/20 Boys Basketball  Kellogg vs St. Maries
1/20 Girls Basketball  Fresh Buhl vs Canyon Ridge
1/19 Boys Basketball  New Plymouth -vs- McCall JV & JV-B
1/19 Girls Basketball  Post Falls vs Lake City
1/19 Girls Basketball  Ambrose vs Riverstone
1/19 Boys Basketball  Raft River vs Murtaugh
1/19 Boys Basketball  Gooding vs Kimberly
1/19 Boys Basketball  Ambrose vs Riverstone
1/18 Girls Basketball  JV Kimberly vs Gooding
1/18 Girls Basketball  Twin Falls vs. Burley JV
1/18 Boys Basketball  Potlatch vs St. Maries
1/18 Girls Basketball  Emmett vs Bishop Kelly
1/18 Girls Basketball  Twin Falls vs Burley
1/18 Girls Basketball  Kimberly vs Gooding
1/16 Boys Basketball  New Plymouth -vs- Ontario -JV-
1/16 Girls Basketball  Minico JV vs Twin Falls JV
1/16 Girls Basketball  Minico vs Twin Falls


IdahoSports.com Blogs
 
Matt Harris

IdahoSports.com

Matt joined the IdahoSports.com team in the fall of 2011. He is the Sports Information Director and also broadcasts many sporting events throughout Idaho. Matt grew up in Alberta, Canada and moved to the Gem State in 2004. He holds a Bachelors Degree in Broadcast Communications and works for Riverbend Communications. Matt married his wife (and much better half), Hannah, in 2010 and they have three children: Eli, Naomi, and Elizabeth. He and his family reside in Idaho Falls. Follow Matt on Twitter: @IdahoSportsMatt

 

If The 2017 Football Playoffs Were Seeded Using RPI
Published: 10/23/2017 9:35:58 PM

A look at what this year's state football tournament would look like if we used the 'Robison RPI' to seed the tournament.


Follow Matt on Twitter: @IdahoSportsMatt

As we move into the football playoffs and fans, coaches, and players alike begin to dig into the state tournament brackets, the inevitable discussion regarding bracketing procedures is raised. It's a question that comes with every state tournament season without fail.

That said, it doesn't mean that the state's current method of bracketing is wrong or anything like that - it's just a different system to bracket teams, one that the schools have agreed upon year after year. Couple that with the added behind-the-scenes factors such as time lost in the classroom and travel costs for the schools that play a role in how the brackets are shaped.

Earlier this football season, I wrote about an experiment with a Ratings Percentage Index that was being conducted by my friend, Dayton Robison. You can read more about that by clicking HERE. He has dubbed his experiment the "RRPI", which stands for "Robison Ratings Percentage Index", and modeled it after the RPI formulas that nearby states use to help them seed their state tournaments, with minor modifications for customizable personal preferences. Robison took all of the scores from Idaho (including out-of-state scores and out-of-state team records) and plugged them into his formula to produce the first complete edition of the RRPI.

The goal of the RRPI was to be able to rank teams accurately based on their record and overall strength of schedule, then seed those teams into a hypothetical state tournament scenario based on those rankings. Robison took many elements out of the Washington Interscholastic Activities Association RPI and combined them with elements of his own preference.

To break it down simply, here are the elements and factors involved in the RRPI:

1. The base formula is built using 25% weight of a team's win percentage, 50% weight of the team's opponents winning percentage, and 25% weight of the team's opponents' opponents winning percentage.

2. A win away from home is given an extra 5% weight.

3. A road win against a team with a better than .650 record is given an extra 2.5% weight.

4. Cross-classification wins are weighted 15% going both ways, meaning that if a 2A schools beats a 3A school it's as if it was worth 1.15 wins. Conversely, if a 3A school beats a 2A school school it counts as 0.85 wins.

Robison also ran a scenario in which he used the same factors with the exception of the base formula, which was tweaked to reflect what the Colorado High School Activities Association uses. Their formula is 37.5% weight of a team's winning percentage, 37.5% weight of the team's opponents winning percentage, and 25% weight of the team's opponents' opponents winning percentage. This tweak in the formula will be shown in the examples that follow.

Confused yet? Don't worry - we'll walk you through it.

Below are links to the six Idaho classifications with examples of what the tournament would look like if it were seeded using current brackets. In each link, you will be shown what each bracket looks like using RRPI Washington base, the RRPI Colorado base, and the RRPI Colorado 'No Auto' scenario which involves no teams getting an automatic berth for winning the district - meaning that a team would have to hope they are ranked high enough to make it into the tournament.

Now, this isn't to say that this is the only way of operating a seeded bracket. There are many different ways in which it could be conducted. We are just showing you three different examples of what could happen.

The 1AD1 and 1AD2 rankings and brackets will be released following the weekend of Oct. 28. The 1AD1 classification is in their final week of the regular season while half of the 1AD2 classification is also wrapping up regular season play.


Class 5A                                   Class 2A


Class 4A                                   Class 1AD1


Class 3A                                   Class 1AD2





Fan Comments Sign In | Register









 
Advertise on IdahoSports.com | About Us | Past Years' Information | Privacy Policy

This information is copyrighted to IdahoSports.com.
Any rebroadcast, retransmission, or other use of this information is strictly prohibited without the expressed, written, consent of IdahoSports.com.
Copyright 2018 IdahoSports.com