QB ratings???

[kcbob]

Did I hear something correct last night?

Supposedly, Kurt Warner's game against the Chargers produced a QB rating of something like 158.3. This was the ninth time in NFL history that a QB had done this in a game. His statistics were something like 24 for 30 for 390 yards, 4 TDs, and no INTs.

My question is... if this produced 158.3, wouldn't 25 for 30 be better? I know the rating system has tables and formulas but this is just common sense. He [b]could[/b] have done better, n'est-ce pas? [img]http://www.ChiefsPlanet.com/ubb/confused.gif[/img]

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Frodo lives!!

Go Chiefs!!

[This message has been edited by kcbob (edited 10-04-2000).]

[This message has been edited by kcbob (edited 10-04-2000).]

[bkkcoh]

kcbob,

I think the way the formula is, 158.3 is the max the rating can be.



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bk

[Idaho Chief]

kcbob,
I'm not 100% sure, but I believe in the rating systme 158.3 is as high as the rating goes. It is not an unlimited measuring system.

Dev
~working with a limited memory device...

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GO CHIEFS!!!!
Time to eat Seachicken!!

I'm not certain what the formula criteria are and I certainly don't understand the whole thing. However, upon it's creation, it was believed that NO QB is going to connect on 100% of his passes so they set the "perfection" bar a little lower. Kinda like grading on a curve.

[kcbob]

Idiot double post! [img]http://www.ChiefsPlanet.com/ubb/redface.gif[/img] [img]http://www.ChiefsPlanet.com/ubb/redface.gif[/img]
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Frodo lives!!

Go Chiefs!!

[This message has been edited by kcbob (edited 10-04-2000).]

[kcbob]

Well I think it's fairly obvious that the maximum rating is 158.3. Maybe I should restate my question and ask "Why is there a max in the first place?"

Then again, I could see a max if it was something like 100. A batting average max is 1.000. I understand that. But 158.3???? I'd like the drugs they were doing when they came up with that. [img]http://www.ChiefsPlanet.com/ubb/wink.gif[/img]

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Frodo lives!!

Go Chiefs!!

[bkkcoh]

Is everyone ready to attend QB rating 101??

The QB rating is broken down into 4 factors:

[b]Factor 1:[/b]
(pass completions / Pass Attempts) / .2

[b]Factor 2:[/b]
(yards / Pass Attempts) / 4

[b]Factor 3: [/b]
(touchdowns / Pass Attempts) / .05

[b]Factor 4: [/b]
(.95 - (interceptions / Pass Attempts)) / .04

((Fact1 + Fact2 + Fact3 + Fact4) * 100) / 6 = [b]qbrating[/b]

There will be a test! [img]http://www.ChiefsPlanet.com/ubb/smile.gif[/img]




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bk

[Bob Dole]

The system is designed to grade a QB's effectiveness over the course of the season, rather than rate his performance for a single game. Thus, while a QB might complete 95% of his passes in one game, it is highly unlikely that one would complete that percentage over a season. (The season record is 70.55%.)

Same for interceptions. To attain the highest possible score on that component, a QB would have to have no interceptions for the season. (Not going to happen.)

The average yards/pass perfect score requires an average of 12.5 yards/completion. The NFL record is 11.17 and has stood since 1957.<P>

[Bob Dole]

And to obtain the maximum possible score on touchdowns/pass requires that he throw a touchdown 11.9% of the time. The record of 13.9% has stood since 1943.

[Bob Dole]

And not to pick nits, but the formula for completion percentage is:

((100(comp/att))-30)*.05=x

*note:if x is less than 0, x=0, if result is
more than 2.375, x=2.375

Yards gained per attempt:

((yds/att)-3)*.25=y

*note:same as above note

Percentage of TD passes:

((TD/att)*100)*.2=z

*note: 2.375 maximum value for z

Percentage of INT:

2.375-(((INT/att)*100)*.25)=a

*note:if a is less than 0, a=0

To calculate total QB rating:

((x+y+z+a)/6)*100=QB Rating<P>

[DanT]

2000 NFL QBs with 100+ Attempts, ranked by "Air-yards" per attempt,
where "Air-yards"=yards_passing minus yards_after_catch.

AIRPC is "Air-yards" per completion
AIRFRAC is "Air-yards"/yards_passing
YPA is yards_passing per attempt, the component used in the QB rating.

OBS AIRPA AIRPC YPA ATT COMP Y YAC AIRFRAC NAME

_1 7.4 10.3 11.8 165 119 1947 721.0 63% Kurt Warner
_2 6.2 10.0 _8.5 117 _72 _991 270.0 73% Daunte Culpepper
_3 5.9 _9.7 _8.1 112 _69 _903 237.0 74% Rob Johnson
_4 5.7 10.0 _7.3 151 _86 1097 233.0 79% Elvis Grbac
_5 5.5 _8.7 _8.0 143 _91 1149 356.0 69% Brian Griese
_6 5.4 _8.2 _8.9 143 _94 1267 496.0 61% Peyton Manning
_7 5.2 _8.2 _7.7 124 _79 _949 304.0 68% Steve Beuerlein
_8 5.0 _8.5 _6.7 184 108 1229 316.0 74% Mark Brunell
_9 4.8 _7.6 _7.1 153 _97 1079 343.0 68% Tim Couch
10 4.7 _8.1 _6.7 181 105 1220 374.0 69% Brett Favre

[This message has been edited by DanT (edited 10-04-2000).]

[This message has been edited by DanT (edited 10-04-2000).]

[DanT]

11 4.6 8.0 6.3 157 _91 _989 260.0 74% Jake Plummer
12 4.6 8.3 6.7 116 _64 _777 249.0 68% Jay Fiedler
13 4.5 7.6 6.2 148 _87 _917 253.0 72% Charlie Batch
14 4.4 7.3 6.5 161 _97 1052 342.0 67% Cade McNown
15 4.3 8.0 6.5 149 _81 _972 324.0 67% Chris Chandler
16 4.3 8.7 6.7 132 _66 _882 309.0 65% Shaun King
17 4.2 6.4 7.1 172 112 1216 501.0 59% Brad Johnson
18 4.1 6.6 7.5 149 _94 1122 506.0 55% Jeff Garcia
19 4.1 6.8 6.0 177 106 1067 343.0 68% Drew Bledsoe
20 3.9 6.5 6.3 167 100 1050 401.0 62% Kerry Collins
21 3.8 6.3 7.1 101 _62 _721 333.0 54% Rich Gannon
22 3.8 6.4 5.9 168 100 _995 360.0 64% Donovan McNabb
23 3.6 5.9 6.7 124 _76 _828 381.0 54% Jon Kitna
24 3.6 7.2 5.9 155 _77 _911 356.0 61% Vinny Testaverde
25 3.5 6.9 5.2 102 _51 _529 175.0 67% Ryan Leaf
26 3.4 7.6 5.0 123 _54 _619 206.0 67% Akili Smith
27 3.2 5.7 5.9 173 _98 1015 460.0 55% Tony Banks
28 2.6 4.3 5.3 143 _84 _755 390.0 48% Jeff Blake

[milkman]

Thanks guys, my head hurts now, and my screen just got blurry. My eyes lost the ability to focus.
I just fell down and can't get up.

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[b]Red Eyes[/b]
[i]Chinn Up.[/i]

[b]The [i]SitCom[/i] must die!!</B>

[DanT]

It's interesting to me that, though Warner's receivers give him lots of yards after the catch, he also leads the league in air_yards per attempt. Also, note that Grbac has gotten a higher percentage of his passing yards through the air than anyone in the league. His AIRFRAC is 79%, which means only 21% of his yards have come after the catch. Compare this to Gannon, say, whose AIRFRAC of 54% means that 46% of his passing yards have come from his receivers after the catch, more than twice as big a share as Grbac's receivers have given him.

[Bob Dole]

Good, milkman. We've been in sore need of a replacement since Mrs. Miller passed.