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From: djvh@drutx.UUCP (VanHandelDJ)
Newsgroups: net.sport.football
Subject: RE: NFL Quarterback ratings
Message-ID: <345@drutx.UUCP>
Date: Wed, 23-Oct-85 13:47:36 EDT
Article-I.D.: drutx.345
Posted: Wed Oct 23 13:47:36 1985
Date-Received: Thu, 24-Oct-85 08:07:22 EDT
Organization: AT&T Information Systems Laboratories, Denver
Lines: 37


I tried sending this direct several times without success:  qumix not found

> Does anybody out there in netland know how quarterback ratings are determined?
> I have looked through several books and have been unable to find the OFFICIAL
> NFL method for calculating these ratings.  For example, Dan Marino and Joe
> Montana both had ratings over 100 points last year.  Where do these numbers
> come from?
> 
> I am looking for the OFFICIAL rating method only.  Please respond using
> electronic mail so that the newsgroup isn't cluttered up with repeated
> responses.  I'll post anything that I find out in a follow up article.
> 
	Good Luck.  I too have been looking for the official method to 
calculate QB ratings.  The NFL uses charts for this, which I have not been
able to find.  If you get them, please send me copies.

	The closest method I heard of (to the OFFICIAL method) appeared in
The Sporting News, in a fall 1980 issue.  The formula is:

		(5/6)*(CMP + 5*AVG + 4*TD + 2.5 - 5*INT)

CMP=Completion Pct   AVG=Yds/Att   TD=(TD/ATT)*100   INT=(INT/ATT)*100

So, for a QB with these stats:   ATT  CMP  YDS  TD  INT
				 365  202 2879  22  15

it's: (5/6)(202/365*100 + 5*2879/365 + 4*(22/365*100) + 2.5 - 5*(15/365*100))

			= 84.03

The rating must also be:    0 <= rating <= 150
 
					
							Dave Van Handel