Monday, October 16, 2017

Weekly Playoff Probabilities - Week 7

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

Rank Team Agg Rank POFF Prob Change
1 Alabama 1 88.99% 5.5%
2 Penn State 3 51.64% 17.0%
3 Georgia 6 51.35% 0.2%
4 Ohio State 2 39.04% 9.8%
5 Miami (FL) 14 38.91% 16.8%
6 Wisconsin 9 27.36% -0.8%
7 Clemson 5 23.50% -36.1%
8 TCU 12 17.93% 10.8%
9 Notre Dame 10 17.71% 2.7%
10 Central Florida 17 14.59% 8.7%
11 Washington 4 9.84% -24.4%
12 USC 16 6.30% 2.1%
13 Oklahoma 7 4.19% 0.6%
14 North Carolina State 20 1.99% 1.3%
15 Oklahoma State 8 1.89% 1.4%
16 Stanford 13 0.96% 0.8%
17 Michigan 18 0.84% 0.4%
18 Michigan State 30 0.70% 0.5%
19 Washington State 25 0.69% -11.4%
20 Auburn 11 0.49% -4.5%
21 Virginia Tech 19 0.47% 0.2%
22 Mississippi State 21 0.24% 0.2%
23 Texas A&M 34 0.13% 0.1%
24 Wake Forest 31 0.07% 0.0%
25 Georgia Tech 23 0.05% -0.1%
26 South Carolina 40 0.04% 0.0%
27 Kentucky 62 0.03% 0.0%
28 Iowa 28 0.02% 0.0%
29 LSU 24 0.02% 0.0%
30 South Florida 32 0.02% 0.0%
31 Virginia 52 0.01% 0.0%
32 Utah 37 0.01% 0.0%
33 Texas Tech 26 0.00% -0.1%
34 Iowa State 33 0.00% 0.0%
35 Arizona 39 0.00% 0.0%
36 West Virginia 38 0.00% 0.0%

1.  The weekend of upsets gives us our biggest shake-up of the season thus far.  Clemson is still in good shape because of a strong SOS and the computer's faith in their team strength (they're still a favorite in all remaining games), but their margin of error is almost completely shot.  Washington still has a chance as well because they're actually ranked higher than Clemson in the computer ratings.  Poor Wazzu and Auburn are basically done though, largely because both teams have less than 5% chance of winning out. 

On the other side of the ledger, Miami is the main benefactor of the chaos, as they passed one of their most difficult remaining tests to become a Legitimate Contender.  Penn State takes an unprecedented bye-week leap basically because someone had to move up.  And Central Florida looks to be extremely good, and has an SOS that compares favorably to the only non-power teams to make the BCS top four (2009 and 2010 TCU).  They probably don't actually have a 15% chance of making the playoff, but it's probably closer to that number than you think.

2.  Our meatiest slate of eliminations happened this past weekend, because of course it did.  We say goodbye to Louisville, Indiana, Oregon, Florida, Tennessee, Duke, Texas, Kansas State, UCLA, Minnesota, Maryland, Purdue, San Diego State, and Navy.  None of these teams were higher than 17th in the preseason playoff odds, but this group represents a lot of the teams that had a puncher's chance if things broke right.  Instead the playoff will once again be loaded with blue-bloods.  And we will still watch.

3.  If Alabama and Georgia both emerge from the season with one or fewer losses, they probably both get in.  If one or both don't, then the SEC will be limited to one team at most, as there are no other serious contenders.  This makes for the clearest conference-level playoff picture possible.  In other items, the Big 12 and Pac 12 aren't dead, but they need a team to go unbeaten the rest of the way to have a shot.  Given the depth of both conferences and the difficult remaining slates for most contenders, it seems like long odds.  But there are enough potential contenders in each league such that the total odds of a team from one of those conferences making the playoff is basically a coin flip.

Conference Exp Playoff Teams
SEC 1.413
B10 1.196
ACC 0.650
B12 0.240
P12 0.178
IND 0.177
AMER 0.146

4.  The theme of the conference title odds is that many big divisions will come down to one game.  Clemson-NC State is your game of the year in the ACC Atlantic, just like I sort of predicted.  Ohio State-Penn State will probably decide the Big Ten East.  Washington-Stanford is huge like we originally expected.  And Arizona (!) is now the main threat to USC.  Fun times.

Conference Favorite Perc   Runner-Up Perc
ACCA Clemson 51.0%   North Carolina State 45.7%
ACCC Miami (FL) 84.0%   Virginia Tech 11.4%
AMEE Central Florida 71.6%   South Florida 28.4%
AMEW Memphis 40.5%   Houston 30.3%
B10E Ohio State 70.4%   Penn State 27.3%
B10W Wisconsin 98.9%   Iowa 0.7%
B12 TCU 78.2%   Oklahoma 51.7%
CUSAE Florida Atlantic 48.3%   Marshall 32.9%
CUSAW North Texas 64.5%   Southern Miss 14.5%
MACE Ohio 52.5%   Akron 23.2%
MACW Toledo 48.7%   Western Michigan 30.1%
MWCW San Diego State 65.7%   Fresno State 33.7%
MWCM Colorado State 51.7%   Boise State 41.8%
P12N Washington 50.4%   Stanford 44.0%
P12S USC 79.7%   Arizona 10.4%
SECE Georgia 92.5%   Florida 3.2%
SECW Alabama 88.6%   Auburn 8.7%
SUN Appalachian State 67.3%   Arkansas State 18.9%


Week 8 Preview

Home Away Home Win Prob Playoff Teams Lost
Notre Dame USC 69.2% 0.049
Navy Central Florida 23.8% 0.035
Penn State Michigan 82.1% 0.034
Miami (FL) Syracuse 87.1% 0.017
Alabama Tennessee 97.8% 0.007
Wisconsin Maryland 94.3% 0.005
Kansas State Oklahoma 20.8% 0.004
Texas Oklahoma State 31.2% 0.003
Michigan State Indiana 65.4% 0.001
Washington State Colorado 77.4% 0.001

So Week 8 is...not deep.  The top three games are exciting and the Oklahoma schools both get big road tests, but beyond that there isn't much here.  Part of the issue is that we're down to just 10 or so realistic playoff contenders, so any "playoff excitement" metric (which this most certainly is) is going to suffer.  That said, just wait for the next three weeks.  You (probably) won't be disappointed.

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