I have the Cajuns finishing with an RPI of .5687 ... good for a #21 rank. Thus we have ...
#21 .5687 Louisiana
#22 .5686 Georgia Tech
#23 .5683 Arizona State
Note the mere .0001 gap between Louisiana and Georgia Tech ... and the .0004 gap between Louisiana and Arizona State.
Boyd has his pRPI out this morning and has (to three digits' precision) ...
#21 .569 Arizona State
#22 .569 Louisiana
#23 .569 Georgia Tech
However, the big difference here is that Boyd throws out ties. Ties usually have a minimal impact on OWP and OOWP calculations, but can move the overall RPI about .0001. In this case, Arizona State themselves had a neutral game tie that was thrown out (vs. Gonzaga). That is, they finished 35-20-1 (Adjusted 34.9-21.1), not 35-20 (Adjusted 34.4-20.6). Thus, Arizona State actually had an aWP of .6232, instead of .6255. That alone is good for an RPI downgrade of .0006 (.0023/4 rounded). Which explains why Boyd has Arizona State jumping both Georgia Tech and Louisiana to #21.
Brian