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Arizona Tops First NFCA Simulated Ratings Percentage Index (RPI) of 2006

View the NFCA's Simulated RPI 

Arizona tops the inaugural 2006 NFCA Ratings Percentage Index as compiled for the second straight year by mathematician Warren Nolan. 

The Wildcats had a 0.6989 percentage to rate ahead of UCLA, Texas, Alabama and Tennessee. 

The Wildcats and Bruins led a charge that put the Pac-10 as the top conference in the RPI, while the SEC followed along with the Big XII, ACC and Big Ten. 

The RPI is a mathematical calculation used to help determine teams’ success, using a calculated strength of schedule and win-loss percentage. 

RPI Calculations 

The same basic formula is used in NCAA Division I men’s and women’s basketball, baseball and softball; however, there are minute differences (penalties and bonuses) that are specific to each sport. For example, there may be a small penalty if a Division I school plays a non-Division I opponent. There may be a small bonus for beating a top 25 team. 

When determining the RPI for each team, the following basic formula is used: 

25% -- Winning percentage. 
50% -- Opponents’ winning percentage. 
25% -- Opponents’ opponents’ winning percentage. 

Although the NCAA publishes the basic formula, it does not release the mathematical bonuses and penalties specific for each sport. It is important to note that the NFCA RPI may not be exactly the same as the NCAA RPI, since the NCAA will not release its bonus and penalty calculations. However, the two should be close and the NFCA RPI should be an indication of where a team stands. The NCAA is not endorsing the NFCA RPI. 

The next NFCA RPI will be released April 21.