Monday, September 11, 2017

Weekly Playoff Probabilities - Week 2

As always, explanation here, ranking below, thoughts after.

Rank Team Agg Rank POFF Prob Change
1 Alabama 1 79.82% -2.0%
2 Oklahoma 3 43.19% 18.6%
3 Clemson 4 40.57% 6.1%
4 Ohio State 2 39.64% -26.1%
5 Penn State 6 25.88% 3.0%
6 USC 10 25.15% 13.4%
7 Wisconsin 11 24.38% -3.8%
8 LSU 7 21.16% -2.4%
9 Florida State 5 18.40% 5.9%
10 Washington 9 17.83% 5.0%
11 Michigan 14 10.50% 1.4%
12 Georgia 16 10.07% 6.2%
13 Stanford 12 7.33% -16.5%
14 Auburn 8 5.97% -9.2%
15 Oklahoma State 13 4.52% 0.5%
16 Oregon 21 3.13% 0.2%
17 Notre Dame 17 2.65% -8.5%
18 Mississippi State 18 2.64% 1.9%
19 TCU 15 2.57% 1.6%
20 Louisville 19 2.47% 1.2%
21 Miami (FL) 22 2.30% 0.5%
22 South Carolina 27 1.32% 1.1%
23 UCLA 26 1.14% 0.2%
24 Houston 44 1.00% 0.8%
25 Washington State 29 0.95% -0.3%
26 Tennessee 25 0.86% 0.3%
27 Virginia Tech 28 0.72% -0.2%
28 Memphis 51 0.50% 0.3%
29 Duke 32 0.47% 0.4%
30 Kansas State 20 0.42% 0.0%
31 Toledo 56 0.40% 0.3%
32 Iowa 35 0.34% 0.1%
33 Colorado 34 0.23% 0.0%
34 Maryland 47 0.21% 0.2%
35 Michigan State 39 0.18% 0.1%
36 Florida 24 0.17% 0.1%
37 Minnesota 49 0.14% 0.1%
38 Utah 40 0.13% 0.1%
39 South Florida 55 0.10% 0.1%
40 San Diego State 57 0.10% 0.1%
41 Georgia Tech 30 0.10% 0.1%
42 Central Florida 54 0.06% 0.0%
43 Wake Forest 46 0.06% 0.1%
44 North Carolina State 31 0.04% 0.0%
45 Vanderbilt 48 0.03% 0.0%
46 Texas 23 0.03% 0.0%
47 Indiana 53 0.02% 0.0%
48 Texas Tech 38 0.02% 0.0%
49 Navy 66 0.02% 0.0%
50 Kentucky 59 0.02% 0.0%
51 Northwestern 50 0.02% -0.3%
52 Nebraska 41 0.01% -0.1%
53 Texas A&M 33 0.01% -0.1%
54 Air Force 74 0.01% 0.0%
55 UTSA 84 0.01% 0.0%
56 Army 71 0.00% 0.0%
57 California 61 0.00% 0.0%
58 Arkansas 42 0.00% -0.1%
59 West Virginia 36 0.00% 0.0%
60 Pitt 52 0.00% 0.0%
61 Illinois 81 0.00% 0.0%
62 Arizona 58 0.00% 0.0%
63 Missouri 62 0.00% 0.0%
64 SMU 73 0.00% 0.0%
65 Syracuse 67 0.00% 0.0%
66 Arizona State 65 0.00% 0.0%
67 Iowa State 60 0.00% 0.0%
68 Virginia 77 0.00% 0.0%
69 Boston College 82 0.00% 0.0%
70 UAB 125 0.00% 0.0%
71 Kansas 110 0.00% 0.0%
72 Purdue 75 0.00% 0.0%
73 North Carolina 45 0.00% 0.0%
74 Baylor 64 0.00% 0.0%
75 Oregon State 93 0.00% 0.0%
76 Rutgers 94 0.00% 0.0%
77 Old Dominion 92 0.00% 0.0%
78 Central Michigan 100 0.00% 0.0%
79 UConn 119 0.00% 0.0%
80 Eastern Michigan 97 0.00% 0.0%

1.  Another week of relative normalcy leaves me with few things to comment on.  Except for the big blinking oddity of a one-loss Ohio State team being in fourth place.  Yes, there is a very specific precedent for this, as the Buckeyes lost in week two in 2014 and went on to win the title, but my model isn't boosting their chances because that happened.  Rather, it's a combination of two things leading them to this surprisingly lofty rank.  First, they are still #2 in the aggregate computer rankings, just ahead of Oklahoma and three points clear of #4 Clemson.  This means they are heavy favorites in all of their remaining games and have roughly even odds of going 2-0 against Penn State and Michigan.  Second, thanks to most of their opponents having good starts to the season, their SOS projection has quickly increased from .561 (decent) to .588 (really good), which would virtually guarantee them a berth in the playoff should they win out.  It's entirely possible that Buckeyes are a sheep in wolf's clothing, but doubt them at your own peril.

2.  Another set of teams were eliminated from contention.  Say good night to Boise State, Western Kentucky, Louisiana Tech, Ohio, Cincinnati, Marshall, New Mexico, Fresno State, Hawaii, Idaho, Louisiana-Lafayette, North Texas, Texas State, and Tulane.  Boise represented the best chance for the group of five to break through, but that was still less than a one percent chance, so these eliminations aren't that impactful on the overall race.

3.  Ohio State may still be in the thick of the playoff race, but their loss does remove some of the margin of error for the Big Ten.  If Ohio State wins out, they'll have to beat Penn State, Michigan, and (probably) Wisconsin, which will make it harder for the conference to place two teams in the playoff.  If a conference finally gets two teams in, it will most likely be the SEC.

Conference Exp Playoff Teams
SEC 1.221
B10 1.013
ACC 0.651
P12 0.559
B12 0.508
IND 0.027
AMER 0.017
MAC 0.004
MWC 0.000
CUSA 0.000

4.  Now that we've had a couple of important conference games, let's bust out the conference race grid.  Since USC passed it's big early-season conference test, it now has the best odds of reaching its title game.  Similarly, South Carolina creeps up to second in the SEC East after collecting a win on the road.  And the CUSA is totally up for grabs for the first time in its current iteration.

Conference Favorite Perc   Runner-Up Perc
ACCA Clemson 47.2%   Florida State 36.2%
ACCC Miami (FL) 36.3%   Virginia Tech 22.0%
AMEE Central Florida 52.2%   South Florida 40.5%
AMEW Memphis 41.9%   Houston 35.8%
B10E Ohio State 67.6%   Penn State 24.4%
B10W Wisconsin 85.6%   Nebraska 3.9%
B12 Oklahoma 86.5%   Oklahoma State 46.7%
CUSAE Western Kentucky 37.5%   Middle Tennessee 30.2%
CUSAW UTSA 38.4%   Southern Miss 30.8%
MACE Ohio 44.2%   Miami (OH) 31.3%
MACW Toledo 56.0%   Western Michigan 25.0%
MWCW San Diego State 76.6%   Fresno State 10.8%
MWCM Boise State 49.5%   Colorado State 30.5%
P12N Washington 54.3%   Stanford 28.5%
P12S USC 88.5%   UCLA 5.2%
SECE Georgia 39.7%   South Carolina 24.9%
SECW Alabama 69.3%   Auburn 14.5%
SUN Appalachian State 53.0%   Arkansas State 20.4%


Week 3 Preview

Home Away Home Win Prob Playoff Teams Lost
Louisville Clemson 31.9% 0.049
Mississippi State LSU 37.8% 0.032
USC Texas 75.0% 0.021
BYU Wisconsin 12.0% 0.010
San Diego State Stanford 16.8% 0.007
Alabama Colorado State 97.5% 0.007
Ohio State Army 97.3% 0.005
Memphis UCLA 37.1% 0.005
Pitt Oklahoma State 20.1% 0.003
Michigan Air Force 92.2% 0.003

Week 3 was already looking like one of the weakest of the year with respect to playoff impact, but then Irma forced the re-scheduling of FSU-Miami, and it looks even worse.  Still, there are enough interesting home underdogs to make for what might be the first relatively crazy week of the year.  One of my personal faves features Memphis getting it's chance at home against UCLA it what might represent the group of five's best chance to make some noise.

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