User:GPR Sports/sandbox

= GPR Analytics =

Football Punt Rating / Football Pass Rating
GPR Analytics thru the years has been one of the early developers of various team sport analytical stats. Love them or hate them - this site is just to introduce some of the history of these stats. There are two different stories on how the NCAA version of the QB Rating was developed. This site is here to offer one of those versions. The only thing that can be established definitively is that the GPR QB Rating was the first to be use on College Quarterbacks. GPR has been used since 1977 where as the NCAA first introduced their version of QB Pass Rating in 1979. GPR also can be credited solely for the Punt Rating equation that has been used for selection of Punters of the Year and All-American punters by some organizations since 1977.

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= About - GPR Punt Rating = Graybeal Punt Rating (GPR)

GPR Punt Rating was developed by Nathan Graybeal, Emory, VA - in 1977 as a High School student. Seeing the need for something better than just punting average to truly rate a punters performance - Graybeal came up with the GPR Punt Rating system in 1977 while serving as the official football statistician for a local College.

Working with the philosophy that a 35 yard punt downed on the opponents 5 yard line should not hurt the punters average but reward them for great placement. GPR rewards the punter by keeping two main stats instead of just overall punting average: (1) Long Field Average; (2) and Short Field average or Coffin Corner average. The field is broken down into two zones: Zone One (Long Field) - where the punter only punts ‘For Distance’; Zone Two (Short Field) where the punter only punts for nearness to the goal line. An average is kept for each of these new stats.

Graybeal had 48 years in the Sports Information field - working for Emory & Henry (23 years as a Sports Information Director), James Madison, UVA-Wise, Bluefield Univ., King University, and also has worked in over 40 NCAA Championship events. The Punt rating has been used since 1977 on several regional punters and more recently on a national basis to rate NCAA D1 punters. It was also used by the ODAC Conference on an experimental capacity for a few years - it helped the coaches in selecting All-Conference Punters. For the seasons of 2017-19 and 2021 the rating system was used to select NCAA Div. I All-American punters and Punter of the Year awards (sponsored by various companies including: Food City and DataDot). The Punt rating system better rewards a punter for doing their task at hand based on field position and breaks things down in a unique new way.

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= NCAA Top Punters / GPR Punt Rating 2017-2021 = .

= GPR Punt Rating 2021 =

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= GPR Punt Rating 2020 = No rating system was used for the 2020 season due to Covid

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= GPR Punt Rating 2019 = .

= GPR Punt Rating 2018 =

. = GPR Punt Rating 2017 =

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= GPR QB Pass Efficiency Rating History = A curious 14-year-old in Virginia set out to figure the formula for QB Rating that the NFL was using in 1974. After reaching out to the NCAA, NFL, and Elias Sports Bureau with no response, he decided to try to figure things out on his own. Using an algebraic matrix - Nathan Graybeal, Emory, VA, chose four main stats categories to use in this matrix: (1) Pass completion percentage; (2) Yards per pass attempt; (3) Percent of passes thrown for Touchdown; and (4) Percent of passes thrown for Interception. Graybeal applied the matrix to the Passing stats of the 1974 NFL season on selected Quarterbacks’ and came up with the variables of 1.0, 8.4, 3.3, 2.0 (See equation below). These are the same variables the NCAA currently uses.

A few months later, in 1975, being a naïve now 15-year-old, Graybeal sent this equation to the Statistics service of the NCAA and to someone at the Elias Sports Bureau – in hopes of getting their thoughts and opinion about possibly using something less complicated than what the NFL used at the time. Still no response from anyone.

Two years later (fall of 1977), while serving as official statistician, Graybeal used this new stat for Head Coach Fred Selfe and the Emory & Henry College football team. Four years later (1979) the NCAA started using this exact same formula to rate the college Quarterbacks and still use it to this day (2024).

Graybeal, being a very curious and eager to learn statistician – communicated frequently while in High School with Steve Boda of the NCAA Statistics service. Boda was very helpful.

The NCAA always has claimed to some version of hiring someone to do

= . = = GPR QB Pass Efficiency Rating Equation =

As first used by Graybeal in 1975 and for Emory & Henry College starting in 1977.
The Equation (A + B + C) - D

A = (Pass Completions / Pass Attempts) x 100

B = (Pass Yards / Pass Attempts) x 8.4

C = ((Pass TDs / Pass Attempts) x 100) x 3.3

D = ((Pass INTs / Pass Attempts) x 100) x 2

 OR 

((Pass Comp x 100) + (Pass Yards x 8.4) + (Pass TDs x 330) - (Pass INTs x 200)) / Pass Attempts

Equation Copyright 1975 by Nathan Graybeal

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= QB Pass Efficiency Rating Equation used by the NCAA =

As first used by the NCAA in 1979.
The NCAA passing efficiency formula is similar to that of the NFL passer rating, but does not impose limits on the four components. The formula is based on college football data between 1965 and 1978, and when the formula was first created, a 100 passer efficiency rating indicated an average performance.

The passing efficiency formula is:

where


 * ATT = Number of passing attempts
 * CMP = Number of completions
 * YDS = Passing yards
 * TDP = Touchdown passes
 * INT = Interceptions

The NCAA passer rating has an upper limit of 1,261.6 (every attempt is a 99-yard completion for a touchdown), and a lower limit of −731.6 (every attempt is completed, but results in a 99-yard loss). A passer who throws only interceptions will have a −200 rating, as would a passer who only throws completed passes losing an average of 35.714 yards.

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= NCAA Top Quarterbacks / GPR Pass Rating = = . =

= NCAA Division I (FBS) -  GPR Pass Rating Leaders since 1977 = . Stats taken from the NCAA official stats websites and processed and ranked by GPR, ,

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= NCAA Division I-AA (FCS) - GPR Pass Rating Leaders since 1979 = .

Stats taken from the NCAA official stats websites and processed and ranked by GPR, ,

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= NCAA Division II - GPR Pass Rating Leaders since 1979 = .

Stats taken from the NCAA official stats websites and processed and ranked by GPR, ,

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= NCAA Division III -  GPR Pass Rating Leaders since 1979 = . Stats taken from the NCAA official stats websites and processed and ranked by GPR, ,

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= 1978 Emory & Henry College Football Stats with Pass Rating = .

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= 1977 Emory & Henry College Football Stats with Pass Rating = ..

= References =