[M T]

81alum, thanks for the correction!  My bad.  I must have looked at the wrong line or something.

Interestingly, Duke's RPI dropped from 14 to 17 (without a loss) at
  http://www.ncaa.com/rankings/basketball-...etball_rpi
but Kentucky stayed the same at 9 (with a loss).

I still don't trust RPI much at all.  The NCAA's simplistic ranking is quite suspect.  Maybe if they gave a score and an error measurement. (eg, Stanford is 100 +/- 5).  But when I see 4 decimal places at http://www.rpiratings.com/womrate.php (which is different than NCAA), I find it disturbing.  But maybe that's because I don't really have a good intuition of what the errors are.  I believe your score can go down if you soundly beat a weak team.

http://www.rpiratings.com/womensrpi.php is supposed to be the same ratings as used by the NCAA, but with numerical scores to 4 digits.

[M T]

81alum, thanks for the correction!  My bad.  I must have looked at the wrong line or something.

Interestingly, Duke's RPI dropped from 14 to 17 (without a loss) at
  http://www.ncaa.com/rankings/basketball-...etball_rpi
but Kentucky stayed the same at 9 (with a loss).

I still don't trust RPI much at all.  The NCAA's simplistic ranking is quite suspect.  Maybe if they gave a score and an error measurement. (eg, Stanford is 100 +/- 5).  But when I see 4 decimal places at http://www.rpiratings.com/womrate.php (which is different than NCAA), I find it disturbing.  But maybe that's because I don't really have a good intuition of what the errors are.  I believe your score can go down if you soundly beat a weak team.

http://www.rpiratings.com/womensrpi.php is supposed to be the same ratings as used by the NCAA, but with numerical scores to 4 digits.