Friday, September 14, 2012

Week 2 Rankings



Hi football fans. I apologize for the delay. The Koopmeiners household received a new addition over the weekend, which tends to cut into the time available for things like updating this blog. On the bright side, late is better than never!

Week 2 brought several unexpected results, highlighted by Wisconsin’s surprising loss to Oregon State in Corvallis and Arkansas’ ugly loss to Louisiana Monroe. It should be noted, though, that my rankings had both teams ranked much lower than the media polls (#37 and #21, respectively) after unimpressive week 1 victories over FCS opponents. Elsewhere, UCLA pulled somewhat of an upset, defeating Nebraska 36-30 at home. It has been a rough start to the season for the Big Ten. Ohio State is not eligible for the postseason and several pre-season favorites have stumbled out of the gate (Wisconsin, Michigan and Nebraska), meaning that Michigan State is now the conference’s only hope for a title contender. Finally, Oklahoma State was not able to follow-up their demolition of Savannah State with a victory, losing by 21 to Arizona on the road.

Here is an updated top 10:


Rank

Team

Rating

Record

E(FR)

P(WARG)
1
Alabama
27.08
2-0
10.55-1.45
0.106
2
LSU
25.86
2-0
10.32-1.68
0.091
3
Florida State
25.83
2-0
10.94-1.06
0.238
4
West Virginia
22.33
1-0
9.26-2.74
0.032
5
Ohio State
22.14
2-0
10.36-1.64
0.145
6
Georgia
21.86
2-0
10.24-1.76
0.045
7
USC
21.79
2-0
9.69-2.31
0.040
8
Oklahoma
20.92
2-0
8.54-3.46
0.010
9
Oklahoma State
20.10
1-1
7.79-4.21
0.010
10
TCU
20.07
1-0
8.38-3.62
0.006

Not much has changed since last year. Alabama and LSU come in at #1 and #2, respectively, setting up an epic match-up on November 3rd in Baton Rouge. Otherwise, 7 of the top 10 remain from last week with Georgia, Oklahoma and TCU taking the place of Oregon, Clemson and South Carolina.

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


P(WARG) Rank

Rank

Team

P(WARG)
1
 50
 Ohio
0.287
2
 3
 Florida State
0.238
3
5
Ohio State
0.145
4
1
Alabama
0.106
5
25
Louisville
0.094
6
2
LSU
0.091
7
6
Georgia
0.045
8
 7
USC
0.040
9
15
Michigan State
0.034
10
14
Oregon
0.033
11
4
West Virginia
0.032
12
8
Oklahoma
0.010
13
17
Clemson
0.010
14
45
Cincinnati
0.010
15
11
South Carolina
0.008

Ohio remains the team most likely to finish the season undefeated. It will be interesting to follow this story if the Bobcats are still undefeated in a couple of weeks. They don’t have the track record of Boise State or TCU and it will be interesting to see if they can play the role of BCS-Buster coming out of the MAC. Florida State appears to be in good shape and will look to take advantage of a week ACC. Neither Alabama nor LSU have a great shot at finishing undefeated but there is a 20% chance that at least one of them runs the table. Of course, we learned last year that a one-loss Alabama or LSU is not out of the picture as long as their only loss is to the other. Finally, it has to be a little sad for Ohio State fans to see their team so high on the list but hey, those were some sweet tattoos!

I’m going to stay out of the prognostication business after Washington was thrashed by LSU but there are a couple of interesting games on the schedule for this weekend. USC plays Stanford in what will be the first major test for the Tree now that Andrew Luck has left for the NFL. Also, Notre Dame plays Michigan State in what is key non-conference game for the Big Ten. A loss to the Irish would mean that the entire conference is essentially eliminated from the national title picture before the end of September.


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

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