The RPI ranking shown below is measure a team's strength of schedule and how a team performs against that schedule. This index considers whether a
team won or lost but not the margin of the victory. More weight is given to teams playing and winning games on the road. The PRD index is an excellent
indicator of a teams success straight up. It has a positive correlation to the number of games a team wins. It simply subtracts a team's Defensive Passer
Rating (the passer rating of a teams opponents) from its Offensive Passer Rating. See the meaning of all the indexes here here.