This topic came up in another thread. I put together more data and found the following.
Here are the last 10 years of RPI and KenPom ranks as of Selection Sunday. Includes all MVC teams who finished top 100 in both ranking systems.
I find it interesting that the RPI tends to give a more favorable rating than KenPom. Note that these systems utilize totally different formulas. The RPI is totally wins and losses based. KenPom ignores wins and losses and calculates offensive and defensive efficiency based on number of points scored, allowed, number of possessions, and quality of opponent.
The argument elsewhere was that WSU would have better RPI's if they played in better conferences. Based on this data, this seems doubtful, unless you think that KenPom not only also penalizes MVC teams, but that it is even more penalizing than the RPI.
Here are the last 10 years of RPI and KenPom ranks as of Selection Sunday. Includes all MVC teams who finished top 100 in both ranking systems.
Year | Team | RPI | KenPom | Difference | % Difference |
2015 | UNI | 14 | 13 | -1 | -8% |
2015 | WSU | 17 | 14 | -3 | -20% |
2015 | Illinois St | 62 | 60 | -2 | -3% |
2014 | WSU | 4 | 5 | 1 | 20% |
2013 | Creighton | 24 | 17 | -7 | -41% |
2013 | WSU | 37 | 35 | -2 | -6% |
2013 | Indiana St | 72 | 98 | 26 | 27% |
2013 | UNI | 83 | 70 | -13 | -19% |
2012 | WSU | 12 | 9 | -3 | -33% |
2012 | Creighton | 24 | 38 | 14 | 37% |
2012 | UNI | 72 | 91 | 19 | 21% |
2011 | Missouri St | 43 | 77 | 34 | 44% |
2011 | WSU | 60 | 56 | -4 | -7% |
2010 | UNI | 17 | 21 | 4 | 19% |
2010 | WSU | 43 | 67 | 24 | 36% |
2010 | Illinois St | 76 | 82 | 6 | 7% |
2010 | Missouri St | 90 | 86 | -4 | -5% |
2009 | Creighton | 40 | 62 | 22 | 36% |
2009 | Illinois St | 47 | 56 | 9 | 16% |
2009 | UNI | 59 | 76 | 17 | 22% |
2008 | Drake | 12 | 12 | 0 | 0% |
2008 | Illinois St | 37 | 43 | 6 | 14% |
2008 | Creighton | 20 | 23 | 3 | 13% |
2008 | SIU | 60 | 56 | -4 | -7% |
2007 | SIU | 7 | 16 | 9 | 56% |
2007 | Creighton | 20 | 23 | 3 | 13% |
2007 | Missouri St | 36 | 36 | 0 | 0% |
2007 | Bradley | 39 | 54 | 15 | 28% |
2007 | UNI | 86 | 74 | -12 | -16% |
2007 | WSU | 100 | 72 | -28 | -39% |
2006 | WSU | 19 | 37 | 18 | 49% |
2006 | Missouri St | 24 | 28 | 4 | 14% |
2006 | UNI | 30 | 31 | 1 | 3% |
2006 | SIU | 31 | 35 | 4 | 11% |
2006 | Bradley | 32 | 23 | -9 | -39% |
2006 | Creighton | 41 | 51 | 10 | 20% |
Avg | 41.4 | 45.8 | 4.4 | 7% |
I find it interesting that the RPI tends to give a more favorable rating than KenPom. Note that these systems utilize totally different formulas. The RPI is totally wins and losses based. KenPom ignores wins and losses and calculates offensive and defensive efficiency based on number of points scored, allowed, number of possessions, and quality of opponent.
The argument elsewhere was that WSU would have better RPI's if they played in better conferences. Based on this data, this seems doubtful, unless you think that KenPom not only also penalizes MVC teams, but that it is even more penalizing than the RPI.
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