How is RPI calculated?
As of 2006-2007, the committee has again altered the method of calculating RPI — now 25 percent is your own winning percentage, 21 percent your opponent’s winning percentage, and 54 percent your opponent’s opponents winning percentage (25-21-54). “Opponent’s winning percentage” is the average winning percentage of each opponent — not the total winning percentage based on the sum of all wins, losses and ties. This change from previous years should have the effect of more strongly emphasizing teams’ own winning percentage in the RPI formula, because opponent’s opponent’s winning percentage — which is now more heavily considered — is an amalgamation of hundreds of games that tends to hover near .500 no matter what.