Tuesday, September 4, 2012

Week 1 Rankings



Hi all! I hope you enjoyed the first weekend of the season. I was glued to the TV and certainly enjoyed the return of football.

The pre-season favorites got off to strong starts, for the most part, highlighted by Alabama’s 41-14 trouncing of Michigan. The only exception was Oklahoma, who uncharacteristically struggled to a 24-7 victory over UTEP. Also struggling was Stanford, who is coming off one of the best runs in school history but lost Andrew Luck to the NFL draft. The Tree needed a fourth quarter field goal to defeat San Jose State 20-17. This drops Stanford from #21 in my pre-season rankings to #34 after week won.

An updated top 10 can be found below:


Rank

Team

Rating

Record

E(FR)

P(WARG)
1
 Alabama
 28.95
 1-0
 10.69-1.31
 0.175
2
 Oklahoma State
 26.22
 1-0
 10.14-1.86
 0.113
3
 Florida State
 25.24
 1-0
 10.71-1.29
 0.18
4
 USC
 24.22
 1-0
 10.12-1.88
 0.073
5
 Ohio State
 22.41
 1-0
 10.06-1.94
 0.098
6
 West Virginia
 22.01
 1-0
 9.41-2.59
 0.034
7
 Oregon
 21.66
 1-0
 10.31-1.69
 0.07
8
 LSU
 21.46
 1-0
 9.17-2.83
 0.016
9
 Clemson
 19.63
 1-0
 9.73-2.27
 0.029
10
 South Carolina
 19.59
 1-0
 9.02-2.98
 0.008

The rankings can be volatile early in the season when there isn’t much data available for estimating the relative strength of each team. That said, seven of the top ten remain and the three newcomers to the top ten, Oklahoma State, West Virginia and Clemson, were ranked 18, 12 and 13 in the pre-season ranking. This illustrates the advantage of incorporating the pre-season rankings through the prior distribution. By incorporating the pre-season rankings, we have eased some of the early season volatility, while updating the pre-season rankings in a more sensible manner than the algorithmic approach used by main-stream poll voters (i.e. where teams only drop if they lose and only move up if teams ranked ahead of them lose).

Here are the top 15 with the best chance of finishing undefeated


P(WARG) Rank

Rank

Team

P(WARG)
1
 50
 Ohio
 0.222
2
 3
 Florida State
 0.180
3
 1
 Alabama
 0.175
4
 22
 Louisville
 0.130
5
 2
 Oklahoma State
 0.113
6
 5
 Ohio State
 0.098
7
 4
 USC
 0.073
8
 7
 Oregon
 0.070
9
 6
 West Virginia
 0.034
10
 9
 Clemson
 0.029
11
 23
 North Carolina
 0.029
12
 12
 Michigan State
 0.026
13
 8
 LSU
 0.016
14
 15
 Nebraska
 0.015
15
 40
 Central Florida
 0.015

Ohio was the big winner of the weekend. The Bobcats increased their probability of finishing undefeated from 2% to over 20% thanks to their upset of Penn State. Alabama and Florida State also appear more likely to finish the season undefeated after impressive opening week victories. That said, none of these teams are a good bet to finish undefeated with all having less than a 22% chance of finishing undefeated and only the top 8 having more than a 5% chance of running the table.

Week 2 will be a bit of a let-down after an exciting week 1. One game that stands out to me is Washington traveling to Baton Rouge to take on LSU. LSU is certainly favored but the rankings have LSU favored by 14, which is a far cry from the Vegas line of 23. Furthermore, Keith Price is one of the best quarterbacks in the country and LSU has a tendency to look sloppy on offense, which can lead to closer than expected results. Don’t get me wrong, LSU should win this game and I’m probably a little biased (I’m a U-Dub alum) but I think this could be an interesting game to watch. In addition, it will also be interesting to see how Missouri and Texas A&M enjoy their first taste of SEC action against Georgia and Florida, respectively.  


Full ranking can be found at my personal website: http://www.biostat.umn.edu/~josephk/index.php?page=sports

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