Tuesday, October 7, 2008

NFL Week 5 Power Rankings

Disclaimers:

  • The Secretary disavows all knowledge of these rankings.

  • These rankings are algorithmically determined based on the final scores of games played this season. This means the power index is a measure of "Demonstrated Power"—and good teams are intrinsically limited on how much power they can demonstrate over very bad teams.

  • The power index algorithm is intended to be predictive; as far as I am concerned, the final arbiter of what is a good or bad ranking algorithm is how well it does picking games.

  • If you bet actual money on games, you are taking your own chances.

  • Yes, I realize that it's not exactly conventional wisdom to put the Dolphins at #3. But that's where APR puts them.

  • If it makes you feel any better, I am willing to stipulate in advance that the team of your choice is unfairly ranked. (Giants fans? I'm lookin' at you.)

RankTeamW-LPower
Index
This week
1
(LW-2)
Tennessee
Titans
5-01.4831
(LW * 1.015)
won by 3
at Ravens
2
(LW+1)
Washington
Redskins
4-11.4787
(LW * 1.001)
won by 6
at Eagles
3
(LW-12)
Miami
Dolphins
2-21.4680
(LW * 1.119)
won by 7
vs Chargers
4
(LW-2)
Carolina
Panthers
4-11.4351
(LW * 1.011)
won by 34
vs Chiefs
5
(LW-9)
Arizona
Cardinals
3-21.4110
(LW * 1.075)
won by 24
vs Bills
6
(LW+2)
San Diego
Chargers
2-31.4067
(LW * 0.966)
lost by 7
at Dolphins
7
(LW-6)
New York
Jets
2-21.3988
(LW * 1.065)
Bye
8
(LW+6)
Tampa Bay
Buccaneers
3-21.3931
(LW * 0.946)
lost by 3
at Broncos
9
(LW+4)
Dallas
Cowboys
4-11.3836
(LW * 0.962)
won by 9
vs Bengals
10
(LW-1)
Denver
Broncos
4-11.3516
(LW * 0.989)
won by 3
vs Buccaneers
11
(LW+3)
Chicago
Bears
3-21.3465
(LW * 0.969)
won by 27
at Lions
12
(LW-6)
New England
Patriots
3-11.3459
(LW * 1.053)
won by 9
at 49ers
13
(LW+3)
New York
Giants
4-01.3377
(LW * 0.977)
won by 38
vs Seahawks
14
(LW-5)
Minnesota
Vikings
2-31.3255
(LW * 1.064)
won by 3
at Saints
15
(LW+8)
New Orleans
Saints
2-31.3186
(LW * 0.933)
lost by 3
vs Vikings
16
(LW-1)
Pittsburgh
Steelers
4-11.3060
(LW * 1.011)
won by 5
at Jaguars
17
(LW+8)
Philadelphia
Eagles
2-31.3029
(LW * 0.952)
lost by 6
vs Redskins
18
(LW+2)
Baltimore
Ravens
2-21.2887
(LW * 0.986)
lost by 3
vs Titans
19
(LW+7)
Buffalo
Bills
4-11.2161
(LW * 0.915)
lost by 24
at Cardinals
20
(LW-3)
Atlanta
Falcons
3-21.2021
(LW * 1.027)
won by 3
at Packers
21
(LW-3)
Indianapolis
Colts
2-21.1754
(LW * 1.021)
won by 4
at Texans
22
(LW+1)
Oakland
Raiders
1-31.1667
(LW * 0.963)
Bye
23
(LW+3)
Green Bay
Packers
2-31.1607
(LW * 0.946)
lost by 3
vs Falcons
24
(LW+2)
Jacksonville
Jaguars
2-31.1607
(LW * 0.976)
lost by 5
vs Steelers
25
(LW)
Kansas City
Chiefs
1-41.1277
(LW * 0.983)
lost by 34
at Panthers
26
(LW)
Cleveland
Browns
1-31.1150
(LW * 0.994)
Bye
27
(LW-3)
Cincinnati
Bengals
0-51.0679
(LW * 1.044)
lost by 9
at Cowboys
28
(LW+1)
San Francisco
49ers
2-31.0588
(LW * 0.971)
lost by 9
vs Patriots
29
(LW+1)
Houston
Texans
0-41.0394
(LW * 0.971)
lost by 4
vs Colts
30
(LW+1)
Seattle
Seahawks
1-30.9683
(LW * 0.939)
lost by 38
at Giants
31
(LW-1)
Detroit
Lions
0-40.8557
(LW * 0.997)
lost by 27
vs Bears
32
(LW+1)
St. Louis
Rams
0-40.8308
(LW * 0.963)
Bye

Comments:

  • The Redskins were still #1 before the results of the Monday Night game. The Vikings win made the Titans win over the Vikings look better, and pushed them to the top spot.

  • Yeah, the Dolphins have somehow found their way to the #3 spot. I realize this looks pretty wacky. Here's some internals of their power index calculation:

    Game:vs SD@ NE@ ARIvs NYJ
    Power:1.6301.9071.0501.169

    They are getting huge amounts of power from their wins, and it's a weighted average, so the early losses count for less every week.

  • The Chargers are at #6 largely on the strength of their wins over the Jets and Raiders:

    Game:@ MIA@ OAKvs NYJ@ DENvs CAR
    Power:1.2361.5101.7811.2751.209

    Note that the Jets' wins over the Dolphins and Cardinals both look better this week.

  • Yeah, the Giants are not only #13, they fall 3 spots in spite of a blow-out win. Here's their internals:

    Game:vs SEAvs CIN@STLvs WAS
    Power:1.3001.1541.2171.749

    Even a blow-out win over a team as weak as the Seahawks isn't enough to sustain a very high power index. Also, as indicated above, older games are weighted less, so the Giants' win over the Redskins is discounted more than the Dolphins' and Chargers' more recent wins.

  • More bad news for the Giants. They have the Browns (APR #26) and 49ers (APR #28) coming up, so they're probably going to continue to drift down. Then they get to the brutal part of their schedule: Steelers, Cowboys, Eagles, Ravens, Cardinals, Redskins... it may take a while, but if the Giants are the real deal, the will start climbing.

  • Also check out the Bears dropping 3 spots for the trouble of blowing out the hapless Lions. APR's just not that impressed with blow out wins against the likes of the Seahawks, Lions and Rams.

  • Teams ESPN likes more than APR:
    Giants (+12) covered above. Steelers (+11) haven't beat a team APR ranks higher than the Ravens (#18). Bills(+10) haven't beat a team APR ranks higher than the Raiders (#22). Colts (+10) have two skin-of-their-teeth wins against the Vikings (#14) and Texans (#29).

  • Teams APR likes more than ESPN:
    Dolphins (-20) covered above. Jets (-11) beat the Dolphins and Cardinals, which actually looks pretty good, at least this week. Chargers (-10) covered above.

Historically Bad Teams Watch

The Rams had a Bye this week, so they don't move. The Lions had another blow-out loss, and could actually push the 76 Bucs down to 3rd place with another big loss. The Chiefs are included as an example of a more ordinary "bad team".

RankTeamNet Pts/GameW-LNext Week
12008 Rams-26.000-4@ Redskins
21976 Buccaneers-20.500-14n/a
32008 Lions-20.250-4@ Vikings
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392008 Chiefs-13.201-4Bye