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NFCA Releases Simulation of Ratings Percentage Index (RPI)

View the NFCA's Simulated RPI 

The NFCA released Friday its weekly simulation of the Ratings Percentage Index (RPI), with Arizona, Michigan, California, Texas A&M and Oregon State occupying the first five spots. 

The RPI is a mathematical calculation that the NCAA developed to give the selection committee an an additional tool when selecting teams for NCAA Championships. The same basic formula (25% winning percentage, 50% opponents' winning percentage, 25% opponents' opponents winning percentage) is used in the NFCA's simulation. 

It is important to remember that the NFCA RPI may not be exactly the same as the NCAA's, and should be considered a simulation. Because the NCAA does not release bonuses and penalties that are administered to its RPI, there will be some differences in the NFCA RPI and the NCAA's RPI. It should also be noted that the NCAA is not endorsing the NFCA's simulation of the RPI. 

The NFCA decided to release an RPI for several reasons. First, because the NCAA only releases a final RPI, we hope to provide our member coaches and their fans the information so that they can have an idea of where they stand. Although schedules cannot be changed midseason, coaches will be able to better judge the importance of upcoming games. 

The simulated RPI will also serve as another tool for members of the USA Today/NFCA Top 25 Committee to use when determining their weekly votes. 

The NFCA will also use the RPI as an additional tool in the selection of the Louisville Slugger/NFCA All-Region and All-America teams. 

Reading the RPI 
The first number listed is the RPI rank, followed by the team name. The record that is listed is as of April 24, and only includes games against Division I competition. The winning percentage listed beside the record accounts for 25 percent of a team's RPI. The rank in the next field is the team's winning percentage ranking. 

The next columns are the RPI number and rank. Again, the RPI number is calculated by using 25 percent of a team's winning percentage, 50 percent of a team's opponents' winning percentage, and 25 percent of a team's opponents' opponents winning percentage. 

The RPI columns are followed by the strength of schedule rankings. The strength of schedule is calculated by combining the winning percentage of a team's opponents. The final column is a team's ranking in the current USA Today/NFCA Top 25 Poll. 

Developing the RPI 
The NFCA, with the assistance of many of the conference offices, sends a complete list of scores to a mathematician that develops the final RPI. 

Warren Nolan, whose name is synonymous with accurate simulations of college basketball and college baseball RPIs, as well as the Bowl Championship Series, was selected by the NFCA to assist in the calculations. For more information on Mr. Nolan, you may visit his Web site at www.warrennolan.com