Sunday, November 22, 2020

College Football Playoff Predictor - Week 12

As always explanation here, data below, thoughts after.

Rank Team Agg Rank CFP Prob
1  Alabama 1 92.44%
2  Ohio State 2 68.55%
3  Clemson 3 48.13%
4  Oregon 12 36.34%
5  Northwestern 14 32.99%
6  Wisconsin 4 27.27%
7  Notre Dame 7 24.75%
8  USC 21 16.00%
9  Miami (FL) 22 14.37%
10  Texas A&M 13 8.85%
11  Washington 24 6.74%
12  Cincinnati 10 4.15%
13  BYU 11 3.37%
14  Indiana 15 2.81%
15  Florida 6 2.72%
16  Marshall 32 2.00%
17  Oklahoma 5 1.43%
18  Georgia 8 1.40%
19  Colorado 60 0.81%
20  Oklahoma State 25 0.76%
21  Iowa State 17 0.63%
22  North Carolina 19 0.61%
23  Coastal Carolina 42 0.57%
24  Maryland 71 0.40%
25  Iowa 9 0.33%
26  Western Michigan 66 0.31%
27  Texas 20 0.31%
28  Purdue 30 0.30%
29  San Jose State 84 0.28%
30  Buffalo 64 0.17%
31  Nevada 79 0.09%
32  Auburn 16 0.09%
33  Kent State 91 0.02%

Diehard Blogacz fans may have noticed I haven't updated the Playoff odds for a while.  The main reason for this was that the Pac-12 was making everything whack.  Last week's numbers had an 0-1 Arizona State all the way up in the top ten.  Normally this sort of oddity would take care of itself soon enough but not this year.  Because my model only looks at 1) number of losses and 2) strength of schedule, it is not able to account for a team that simply doesn't play a lot of games.  A Pac-12 runner-up could finish something like 3-1 with a "decent" strength of schedule and end up in the top four when it's pretty clear that wouldn't reflect reality.

Luckily I was able to come up with a quick and dirty workaround: I simply disregard any Pac-12 team with a loss.  So for the four remaining teams, their playoff odds simply reflect their odds of going undefeated.  And while I don't think a 7-0 USC would necessarily be a shoe-in, this is at least closer to reality that the previous numbers this thing was spitting out.  Good enough for 2020.

ND fans may wonder why the Irish are so low (well behind a Clemson team they beat), but it's pretty straightforward when I peak under the hood.  The model has ND with roughly a 20% chance of winning out, in which case they would definitely be in.  But if they do lose, their SOS is quite bad and my model punishes them for that.  On the other side of the ACC, the Tigers have about a 50% chance of finishing with one loss.  Because their SOS is much better, my model would consider Clemson a near-lock at that point, hence the Playoff odds in the same neighborhood.

Conference Favorite Perc   Runner-Up Perc
ACC Notre Dame 93.4%   Clemson 89.2%
AMER Cincinnati 99.9%   Tulsa 81.1%
B10E Ohio State 99.6%   Maryland 0.3%
B10W Northwestern 93.0%   Wisconsin 5.8%
B12 Iowa State 74.0%   Oklahoma 67.0%
CUSAE Marshall 96.7%   Charlotte 2.0%
CUSAW UAB 88.0%   Louisiana Tech 6.2%
MACE Buffalo 66.7%   Kent State 16.9%
MACW Western Michigan 93.3%   Toledo 2.7%
MWC Boise State 83.6%   Nevada 53.7%
P12N Oregon 74.3%   Washington 24.8%
P12S USC 77.5%   Colorado 13.1%
SECE Florida 95.6%   Georgia 4.4%
SECW Alabama 99.7%   Texas A&M 0.2%
SUNE Coastal Carolina 98.5%   Appalachian State 1.2%
SUNW Louisiana-Lafayette 100.0%      

The conference title grid reflects the impact of Week 12, which clarified virtually every conference/division race.  There are still some pivotal games in the next three weeks (Oregon-Washington, USC-Colorado, Buffalo-Kent State, Iowa State-Texas), but almost every conference features one or two teams in the catbird seat.

Week 13 Preview

Home Away Home Win Prob Playoff Teams Lost
North Carolina Notre Dame 35.5% 0.033
Alabama Auburn 91.3% 0.028
Clemson Pitt 92.6% 0.018
Michigan State Northwestern 15.8% 0.017
Oregon State Oregon 13.2% 0.016
USC Colorado 81.0% 0.012
Texas A&M LSU 74.1% 0.011
Illinois Ohio State 5.0% 0.011
Wisconsin Minnesota 91.9% 0.011
Washington State Washington 34.9% 0.008

Lol the last game on this list was cancelled as I was typing this.  Cool.

Sunday, November 1, 2020

College Football Playoff Predictor - Week 9

As always explanation here, data below, thoughts after.

Rank Team Agg Rank CFP Prob Change
1  Alabama 2 82.34% 3.7%
2  Ohio State 1 70.75% 18.6%
3  Clemson 3 67.43% -4.5%
4  Wisconsin 4 40.27% -1.5%
5  Oregon 10 35.26% -1.7%
6  USC 13 22.30% -1.0%
7  Notre Dame 6 10.47% 1.5%
8  Georgia 5 9.52% 0.9%
9  Washington 26 8.37% -0.4%
10  Utah 27 7.95% -0.1%
11  Indiana 24 6.97% 3.5%
12  Miami (FL) 22 5.22% -1.5%
13  Oklahoma State 12 4.68% -10.2%
14  Marshall 29 2.83% 1.4%
15  California 43 2.82% -0.3%
16  Texas A&M 25 2.68% 0.6%
17  Arizona State 42 2.67% -0.1%
18  Stanford 39 2.00% -0.1%
19  BYU 11 1.82% -0.3%
20  Cincinnati 14 1.42% 0.8%
21  Florida 7 1.37% 0.4%
22  UCLA 62 1.17% 0.1%
23  Boise State 21 1.15% -0.2%
24  Northwestern 28 0.99% 0.5%
25  Penn State 9 0.98% -0.4%
26  Washington State 65 0.91% 0.0%
27  Oklahoma 8 0.79% 0.1%
28  Purdue 44 0.71% -0.1%
29  Virginia Tech 18 0.53% 0.3%
30  Iowa State 20 0.31% 0.1%
31  Texas 15 0.31% 0.2%
32  Nebraska 46 0.30% 0.3%
33  Oregon State 74 0.26% 0.0%
34  San Diego State 37 0.25% 0.1%
35  Coastal Carolina 45 0.24% 0.2%
36  Arizona 77 0.22% 0.0%
37  Auburn 16 0.22% 0.2%
38  Michigan 23 0.21% -8.9%
39  North Carolina 19 0.21% -1.7%
40  Wake Forest 35 0.20% 0.1%
41  Ohio 83 0.17% 0.0%
42  Buffalo 80 0.15% 0.0%
43  Central Michigan 87 0.13% 0.0%
44  Colorado 84 0.12% 0.0%
45  North Carolina State 59 0.10% 0.0%
46  Western Michigan 89 0.07% 0.0%
47  Ball State 101 0.04% 0.0%
48  Miami (OH) 102 0.03% 0.0%
49  Nevada 73 0.02% 0.0%
50  Toledo 94 0.02% 0.0%
51  West Virginia 30 0.01% 0.0%
52  Northern Illinois 107 0.01% 0.0%
53  Michigan State 68 0.01% 0.0%
54  San Jose State 82 0.01% 0.0%
55  Iowa 33 0.01% -0.1%
56  Liberty 75 0.00% 0.0%
57  Kent State 112 0.00% 0.0%
58  Eastern Michigan 113 0.00% 0.0%
59  Kansas State 47 0.00% -0.1%
60  Rutgers 85 0.00% 0.0%
61  Minnesota 66 0.00% -0.1%
62  Maryland 104 0.00% 0.0%
63  Illinois 81 0.00% 0.0%
64  Akron 125 0.00% 0.0%
65  Bowling Green 126 0.00% 0.0%

More than half of the total Playoff odds belong to the three programs that are here every year.  If you're not paying attention to college football this year, you're not missing much on that front.  But there's still some juicy stuff lower down.  Like, Indiana having better Playoff odds than the entirety of the Big 12.  Or Marshall creeping into the top 15.  Or the Pac 12 slipping four team into the top ten simply because of attrition elsewhere.  To be clear, my model doesn't account for plague-related weirdness (ie. Wisconsin might only play like 5 games), but it still gives us an idea what the stakes are heading into November.  And those stakes are evidently win as much as you can and hope you get the #4 slot.

Conference Favorite Perc   Runner-Up Perc
ACC Clemson 95.0%   Notre Dame 81.8%
AMER Cincinnati 80.6%   Tulsa 43.6%
B10E Ohio State 96.8%   Indiana 2.8%
B10W Wisconsin 83.3%   Northwestern 12.8%
B12 Iowa State 51.8%   Oklahoma State 48.2%
CUSAE Marshall 96.1%   Charlotte 2.9%
CUSAW UAB 81.6%   Rice 10.5%
MACE Buffalo 43.7%   Ohio 34.2%
MACW Western Michigan 36.3%   Central Michigan 20.6%
MWC Boise State 85.3%   San Diego State 72.1%
P12N Oregon 63.8%   Washington 21.8%
P12S USC 57.2%   Utah 31.5%
SECE Georgia 63.5%   Florida 36.4%
SECW Alabama 98.9%   Auburn 0.7%
SUNE Appalachian State 52.6%   Coastal Carolina 42.6%
SUNW Louisiana-Lafayette 94.3%   South Alabama 5.0%

The conference odds are mostly as one would expect with a couple exceptions.  Iowa State!  Coastal Carolina!  Rice????!!!  In more orderly news, it appears that the SEC East comes down to the Cocktail Party and Boise is still really good.


Week 10 Preview

Home Away Home Win Prob Playoff Teams Lost
Notre Dame Clemson 35.1% 0.102
Oregon Stanford 82.8% 0.026
Georgia Florida 60.4% 0.023
USC Arizona State 81.0% 0.021
California Washington 38.3% 0.016
Boise State BYU 44.0% 0.014
Wisconsin Purdue 92.7% 0.012
Indiana Michigan 55.1% 0.011
North Carolina State Miami (FL) 27.7% 0.008
Kansas State Oklahoma State 24.7% 0.006

The top weekend of the year earns that title not by having a bunch of huge games, but rather by spreading the love around.  It also earns that title by having way more competitive games that previous weeks.  The underdog in each of the games above has a reasonable shot at pulling the upset.  BYU-Boise starts things off on Friday night and leads us in to the first full Saturday of this bizarre season.  Can't wait.