NIT-log5 and Adjusted Efficiency Predictions

Following up on yesterday's teaser post, it's time to post preview odds for the 2009 NIT.

Contrary to my hopes, I haven't been able to expand my bracket to account for championship chances, so you're just getting finals chances for every team. If the Hoyas win Wednesday and after the first round is over, I'll post complete odds for the rest of the NIT.

Because the NIT is played at campus sites, team's chances of making it to NYC for the semifinals are greatly affected by seeding. First, here's what team's chances would look like if this were the NCAA tournament and home court advantage was not taken into account, via the log5 method:

Seed  Team           2nd Round Quarters New York  Finals
1     Auburn           79.93%   43.19%   19.60%    8.89%
8     UT-Martin        20.07%    4.58%    0.82%    0.14%
4     Tulsa            53.29%   28.60%   12.30%    5.28%
5     Northwestern     46.71%   23.63%    9.43%    3.75%
3     Baylor           37.57%   22.07%   12.20%    5.76%
6     Georgetown       62.43%   43.78%   29.38%   17.48%
2     Virginia Tech    63.87%   24.63%   12.68%    5.50%
7     Duquesne         36.13%    9.52%    3.59%    1.10%

1     San Diego St     81.33%   47.34%   27.67%   15.94%
8     Weber St         18.67%    4.57%    1.14%    0.28%
4     Kansas St        59.62%   30.84%   16.71%    8.92%
5     Illinois St      40.38%   17.25%    7.71%    3.39%
3     South Carolina   52.41%   21.14%    8.65%    3.76%
6     Davidson         47.59%   18.12%    7.01%    2.88%
2     St Mary's        36.30%   18.92%    7.92%    3.51%
7     Washington St    63.70%   41.81%   23.19%   13.42%

Seed  Team           2nd Round Quarters New York  Finals
1     Creighton        78.07%   35.31%   14.01%    6.46%
8     Bowling Green    21.93%    4.16%    0.65%    0.13%
4     Kentucky         58.72%   37.48%   17.95%    9.75%
5     UNLV             41.28%   23.05%    9.06%    4.15%
3     New Mexico       63.69%   32.50%   19.72%   11.58%
6     Nebraska         36.31%   13.54%    6.38%    2.88%
2     Notre Dame       52.37%   28.83%   17.52%   10.30%
7     UAB              47.63%   25.13%   14.71%    8.31%

1     Florida          81.12%   43.34%   27.70%   14.55%
8     Jacksonville     18.88%    4.10%    1.20%    0.25%
4     Miami            66.70%   38.62%   25.45%   13.92%
5     Providence       33.30%   13.94%    6.86%    2.60%
3     Niagara          52.42%   29.91%   12.59%    5.29%
6     Rhode Island     47.58%   26.02%   10.36%    4.12%
2     Penn State       58.05%   27.52%   10.62%    4.09%
7     George Mason     41.95%   16.55%    5.21%    1.63%

Alas and alack, playing at on-campus sites significantly decreases the odds for teams that will likely end up playing a lot on the road.

Here's what it looks like with home field advantage taken into account, including Miami playing at Providence and assuming the higher (better) seed hosts in all second and third round games:

Seed  Team           2nd Round Quarters New York  Finals
1     Auburn           88.76%   61.58%   38.76%   17.28%
8     UT-Martin        11.24%    1.46%    0.16%    0.03%
4     Tulsa            68.66%   25.89%   10.07%    4.21%
5     Northwestern     31.34%   11.08%    4.00%    1.55%
3     Baylor           52.95%   25.35%   12.50%    5.77%
6     Georgetown       47.05%   27.83%   13.97%    8.23%
2     Virginia Tech    76.85%   42.87%   19.63%    8.29%
7     Duquesne         23.15%    3.95%    0.91%    0.27%

1     San Diego St     89.70%   64.40%   48.36%   28.63%
8     Weber St         10.30%    1.15%    0.18%    0.04%
4     Kansas St        74.11%   27.00%   14.09%    7.73%
5     Illinois St      25.89%    7.45%    3.20%    1.44%
3     South Carolina   68.19%   28.72%   10.08%    4.48%
6     Davidson         31.81%   12.68%    2.88%    1.21%
2     Saint Mary's     52.28%   35.16%   12.60%    5.72%
7     Washington St    47.72%   23.44%    8.61%    5.11%

Seed  Team           2nd Round Quarters New York  Finals
1     Creighton        87.58%   52.47%   28.24%   12.67%
8     Bowling Green    12.42%    1.23%    0.10%    0.02%
4     Kentucky         73.56%   35.55%   13.21%    7.03%
5     UNLV             26.44%   10.75%    3.23%    1.44%
3     New Mexico       77.71%   35.44%   21.01%   12.18%
6     Nebraska         22.29%    7.35%    2.28%    1.00%
2     Notre Dame       67.69%   45.92%   27.17%   15.71%
7     UAB              32.31%   11.29%    4.76%    2.64%

1     Florida          89.22%   62.56%   47.87%   25.07%
8     Jacksonville     10.78%    1.39%    0.24%    0.05%
4     Miami            51.97%   22.24%   12.48%    6.82%
5     Providence       48.03%   13.81%    5.51%    2.06%
3     Niagara          67.38%   32.57%   12.53%    5.22%
6     Rhode Island     32.62%   15.16%    3.98%    1.57%
2     Penn State       72.78%   45.52%   16.10%    6.13%
7     George Mason     27.22%    6.75%    1.30%    0.40%

Methodological note: This latter calculation is made using the Pythagorean expectation formula, with an exponent of 11.739. That seemed to produce results very similar to log5, so it's more of an apples-to-apples comparison.


The great advantages of a home team are pretty clear here, as all of the higher seeds look much better. Creighton's chances of making it to New York essentially double, and they're not alone.

In fact, game location probably matters more in the NIT than it does in the NCAA, simply because the teams, except for the automatic qualifying dreck at the bottom of the bracket, are fairly evenly matched in quality.


Finally - not that you need a reminder - efficiency ratings are not destiny.