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Missouri, yes, Missouri, is the best team in the country

2

November 29, 2010 by gaughin

Here’s some math for you.

In this system, teams are awarded for their accomplishments. For each game every team plays, exactly one of four things can happen. Power ratings at any time range from a low of 0 to a high of 100. Assume, for purposes of this poorly written note, that you are a team.

i) If you beat any team by 9 or more points, you accumulate double the opponents’ power ranking towards your total achievement. Why 9 points? Because the team you beat could not possibly have beaten you on the last play of the game if you hold a 9 point lead. If you hold an 8 point lead, they can score, successfully go for 2, and beat you in overtime. So there is a distinct advantage if you hold a lead of 9 points or more. This system does not honor the sort of low-class running up of the score perpetrated by Wisconsin. Shame on you.

2) If you beat any team by 8 or fewer points, you accumulate the opponents’ power ranking towards your total achivement. This does lead to some disparities, as you will see as you continue to read. But I stick by the weird exceptions. I am trying to work out a way to determine the “correct” advantage a team should attain by more than an 8 point victory. Maybe, rather than double, it should be a factor of 1.5. Maybe it should be 1.25. For now, until I think of a good reason otherwise, it’s double. So if you beat Kentucky by 9 or more points, you acquire 89 points; beat them by 8 or fewer, you only get 44.

3) If you lose by 8 or fewer, you lose 100 points, but still acquire your opponents’ power rating. So, lose to Wyoming, lose 72 points; lose to Nevada and you only lose 19 points.

4) If you suffer a “big loss”, defined as a loss by 9 or more points, you lose 200 points but add double your opponents’ power rating. So, lose to Wisconsin by 8 or fewer, you’ll lose only 8 points; lose to them by 9 or more, it will cost you 16 points. But lose to Wyoming by 10, you’re out 144 points.

So, to beat this horse senseless, let’s say you play my current number 40 team Clemson, who has a 61 rating today.

Beat Clemson by 9 or more, you’re up 122 points.

Beat Clemson by 8 or fewer, you’re up 61 points.

Lose to Clemson by 8 or fewer, you’re down 39 points.

Lose to Clemson by 9 or more, you’re down 78 points.

Now let’s take my 80th ranked team, Purdue, currently with a power ranking of 42 points.

Beat Purdue by 9 or more, you’re up 84 points.

Beat Purdue by 8 or fewer, you’re up 42 points.

Lose to Purdue by 8 or fewer, you’re down 58 points.

Lose to Purdue by 9 or more, you’re down 116 points.

So, every team acquires these points, and then the entire set of teams is re-ordered, with the points scaled back down to a 0 – 100 scale. Then the whole process is repeated, over and over and over, until the ratings stabilize. This is called fixed-point iteration. It’s essentially a giant set of equations which are determined by the results of these pairwise contests (games.)

One of the interesting traits of this ranking system is that you can assign the initial rankings absolutely randomly, and regardless of the values they are assigned initially, with 8 – 10 iterations, the same order will emerge, regardless. That’s why it’s referred to as “fixed-point” iteration.

Now, with all of this in mind, here’s how Missouri winds up with a higher rating that Auburn. Let’s take it in rounds.

Round 1

Auburn 6-Nov Chattanooga Won 62-24 0
Missouri 11-Sep McNeese State Won 50-6 0

You get no credit for playing division II teams (though you do lose points if they beat you, which is keeping Virginia Tech out of the top 10.)

Round 2

Auburn 2-Oct La.-Monroe Won 52-3 72
Missouri 27-Nov Kansas Won 35-7 71

Big wins over not-so-good teams. Auburn’s up 72 – 71

Round 3

Missouri 20-Nov @Iowa St. Won 14-0 115
Auburn 13-Nov Georgia Won 49-31 113

These are pretty close; Iowas State’s a tiny bit better than Georgia, but basically this is a wash. Missouri’s up 186 – 185

Round 4

Auburn 18-Sep Clemson Won 27-24 61
Missouri 18-Sep San Diego St. Won 27-24 60

Four games into their season’s histories, we’re tied up, 246 all.

Round 5

Missouri 16-Oct @Texas A&M Won 30-9 174
Auburn 16-Oct Arkansas Won 65-43 168

These are giant, important wins for the two teams. Essentially the same margin of victory, very similar opponents. Missouri’s up, 420 – 414.

Round 6

Auburn 9-Oct @Kentucky Won 37-34 44
Missouri 30-Oct @Nebraska Lost 17-31 -10

A win for Auburn over a mediocre Kentucky, a loss for Missouri to a very strong Nebraska (were you paying attention a couple of weeks ago when I declared the Big 12 the best conference in the country? You should have been.) Suddenly Auburn’s up strong 458 – 410, but they are running out of big wins.

Round 7

Missouri 25-Sep Miami (Ohio) Won 51-13 98
Auburn 25-Sep South Carolina Won 35-27 89

Missouri murders, Auburn squeaks by. If Auburn can beat South Carolina badly in the SEC championship, they are probably going to wind up my number 1. But not this week. Auburn’s still up 547 – 508.

Round 8

Missouri 9-Oct Colorado Won 26-0 118
Auburn 26-Nov @Alabama Won 28-27 85

Here’s the first sticking point for most readers who get this far. Missouri murders an above average Colorado, Auburn squeaks by a better than that Alabama. Does Missouri deserve more points? If you don’t think so, program your own system. Auburn’s still up, 632 – 626.

Round 9

Missouri 13-Nov Kansas St. Won 38-28 131
Auburn 23-Oct LSU Won 24-17 79

Eat grass, Les Miles! Eat it! Here that 9 or greater/8 or fewer dichotomy hangs up Auburn, so you might make a valid argument, but I find my math more interesting than your puny human emotional entreaty. Missouri surges ahead, 757 – 711, but unfortunately, Missouri’s got another loss in the pipeline.

Round 10

Auburn 9-Sep @Mississippi St. Won 17-14 64
Missouri 6-Nov @Texas Tech Lost 17-24 -43

Missouri’s Waterloo, as far as this year’s official ratings go, but if Auburn was as good as SEC fans think, they would have beaten Mississippi State by more than a wafer-thin field goal. Auburn’s up, 775 – 714, but that’s where it ends.

Round 11

Missouri 4-Sep Illinois Won 23-13 137
Auburn 30-Oct @Mississippi Won 51-31 78

Illinois was definitely better than “we lost to Vandy”. So, with only one game to go, Auburn’s up 853 – 851, nearly a dead tie, and the true separation between the teams boils down to a single game. So, who have we not yet covered in this season?

Round 12

Missouri 23-Oct Oklahoma Won 36-27 186
Auburn 4-Sep Arkansas St. Won 52-26 73

Case closed. Auburn may have the unbeaten record, but Missouri’s got better wins consistently. Missouri 1037, Auburn 926. Auburn’s probably got to beat South Carolina by at least 9 to have a chance of being the best team in the nation (and frankly, Nebraska and Ohio St and TCU and Oregon and Stanford could probably all beat the Czizzikcks.)

Auburn’s solution? Quit scheduling crap teams like Chattanooga. Beat mid-level teams in your conference by more than 8.

Auburn 6-Nov Chattanooga Won 62-24 0
Missouri 11-Sep McNeese State Won 50-6 0

2 comments »

  1. Keith says:

    The problem I have here is phenomenological and quite possibly existential, but perhaps also important. The power ranking points that I, as a team, receive from my 9+ point punishment of my opponent is based on their ranking from the week before: the then rather than the now. The team does not exist on the field as it was but as it is. The “what is a field” and “are points really tadpole lymph nodes” questions are beside the point.

  2. gaughin says:

    Agreed, except that it is not localized to the week before; it’s spread across the entire season. But I think I get your point. Maybe.

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